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Chemistry 101 Q&A Archive of August 17, 2021

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August 17 of 2021

[H3O+]=4.4×10^(-11) M
Q2. What are the basic rules used for the nomenclature of coordination compounds?
13. A classmate is having difficulty understanding how the concepts of open system, closed system and insulated system and how they are related to exothermic and endothermic reactions. Write a note to explain to your classmate how the concepts are related. Use diagrams to help clarify your…
HOCH2CH2OH is a
From the following formula, calculate the amount of each ingredient required to make 16 fl oz of lotion. Express all answers in metric system units, and round each final answer to two decimal places. Calamine 35 g Zinc Oxide 0.6 oz Glycerin 15 mL Bentonite Magma 1.5 fl oz Calcium Hydroxide…
Aspartic acid breakdown can begin with a transamination reaction to form oxaloacetate. Starting with oxaloacetate, what is one set of metabolic processing that can turn the carbon atoms from aspartic acid into a macromolecular form of stored energy?
Perform this calculation with the correct number of significant figures below (Must show your work): (2.333 x 1.22) / (0.0007 x 1.24) =
Briefly, but informatively, discuss the methods of atomisation for atomic absorption spectroscopy instrument.
Draw the Newman projection for 1,4-dibromobutane.
Worked problem: Write the mechanism for the transesterification
Q1. What are pericyclic reactions? Q2. Explain sigmatropic rearrangement in detail.
A nonapeptide released by globulins in the blood in response to a wasp sting. Hydrolysis gives the following amino acids: 2 Arg, Gly, 2 Phe, 3 Pro, and Ser. Edman degradation gives phenylthiohydantoin of Arg. Cleavage with carboxypeptidase gives Arg. Partial hydrolysis gives the following di-…
use correct # of S.F. USE standard notation NOT scientific notation 71.235-0.23
From the following separations of vibrational levels in the ground electronic state of CO, obtain values of 𝛚e, 𝛚exe, and De. 𝑣’-𝑣'' 1-0 2-1 3-2 4-3 5-4 6-5 ∆G/cm-1 2143.1 2116.1 2088.9 2061.3 2033.5 …
Explain in terms of τ₀, the rate coefficient of internal conversion (kIC), and the rate coefficient of intersystem crossing (kISC) why compounds in which the lowest excited singlet state is nπ* in nature do not usually fluoresce strongly.
For the resolution of racemic naproxen using N-octyl-D-glucamine as a resolving agent, please draw out the specific reactions used in the separation process.
4. (10) Why do the palladium catalyzed reactions usually need a base as part of the reaction?
Unknowns are p-toluic acid and benzophenone. Look for the derivatives to prepare for the assigned unknowns (see unknowns names above). (2 each, total 4 derivatives). Write procedures for the derivatives with melting point and solubility information.
How is cooking like a chemical reaction?
3. Sketch the reaction mixture, designating the location of the aqueous-organic interface. (for nylon-6,6)
–0.0085 m – (9.5 × 10^–3 m) = ? Give your answer with the correct number of significant figures and express the answer in scientific notation. Enter your answer without the units, using the format: 1.23 x 10^3 enter as: 1.23*10^3 5.67 x 10^–8 enter as: 5.67*10^–8
Please provide a reaction for the formation of an amide when N-methyl-n-propylamine reacts with butanoic acid.
why is it important to allow crysrals to grow slowly?
Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES)
Round 6.9840063 × 106 to 5 significant digits. Round 6.9840063 × 106 to 3 significant digits.
Explain how proton NMR could be used to confirm product formation. Refer to specific splitting patterns and characteristic chemical shifts. The product here is 2-hydroxy-5-nitrobenzonitrile.
What is the name of SiF6?
Answer the following question. Give the answer in decimal notation to the correct number of significant figures. 3 +4.32 x 2.515
2-What is graphene? Explain the origin of the D, G, and 2D peaks in a Raman spectrum of graphene. What happens to the G and 2D peak as the number of layers of graphene increases?
Briefly distinguish between the following terms with appropriate examples: a. Epimers and diastereomers b. Aldoses and ketoses
Explain how a nuclear fission reaction can be controlled to produce heat for power generation, rather than an explosion.
Describe how ligands properties can be parameterized. Give both classic and more modern approaches to these parameters.
explain faradays law
Glycerolipid Biosynthesis Name the enzymes and draw the reactions of the Kennedy pathway for triacylglycerol biosynthesis, and identify which intermediates are branch points for phospholipid biosynthesis. Name the enzymes and draw the reactions for the synthesis of phosphatidylcholine.
18. Which of the following is the correct equation for the condensation of water? *
5. What are the coenzymes? How do they function?
What is happening when you see an effervescence after adding NaBH4.
3. Complete the following calculations expressing the result in the correct number of unambiguous significant figures. a. 8.9945 + 0.466543 = _____________ b. 100.00 – 0.001369 = _____________ c. 844 ÷ 4 = _____________
7. Analyze the IR spectra of the starting material and the main product of the benzyl alcohol synthesis. Check the signals (bands) that confirm their functionalities.
2) Discuss the electrical properties of the sols.
cancel the question
For the reduction of benzoin, use Cram's Rule or the Felkin model for asymmetric nucleophilic attack on chiral compounds to predict which diastereomeric product (racemate or meso) should be obtained. The response should include the appropriate depiction of the transition state for the…
Sketch the resulting product of 2,4-DNP with CH3COCH3
Define the word spectrophotometer 2. What determines the color of a solution? 3. What determines the intensity of the color of a solution?
What product is formed (chalcone) from 1-indanone and p-Chlorobenzaldehyde?
what is chemistry
Corrosion is usually related to the segregation of specific elements or the formation of a compound at the boundary.
25) When the astronauts were on the moon, they could see the earth, but could not hear a sound?
product for iso-propanol + methanol?
Question 1. Referring to the following reaction: B2H6 + Na+[BH4]‒ → Na+[B3H8]‒ + H2 [B3H8]‒ = Classify the anion [B3H8]‒ as nido, closo, or arachno based on molecular formula and shape. Explain if [B3H8]‒ is either nido, closo, or arachno, and why it is not the others. Answer: [6…
When using the Trizol method for isolating RNA, which organic chemical is capable of causing chemical burns to the skin?
Why is gravimetry and titrimetry considered as absolute methods? What is the measured quantity in the case of these methods, and how can they be transformed into concentration? Describe the method applicable to determine the organic component concentration in a powder sample. Describe the…
Given the following data pairs (x, y), find the regression equation. (1, 1.24), (2, 5.23), (3,7.24),(4,7.60), (5, 9.97), (6, 14.31), (7.13.99), (8, 14.88), (9, 18.04), (10, 20.70) ŷ = 2.040 ŷ = 1.982 – 0.436 ŷ = 0.490.2 - 0.053 ŷ = 0.490.2 None
Why are film formers and solvents important in sunscreen formulations?
Perform the following calculations and report your answer with the proper number of significant digits. I would need the answer along with step-by-step solution. (4.66 × 10^2 mm^2) / (23.3 mm) (3.18 × 10^-5 m^3) / (6.929 × 10^-3 m) (215 g) / (3.5 × 10^2 mL) (19.55 g) / (21.21 mL) (6.172 ×…
2) Explain The Phenomenon Of Complementary Colors (Hint: Newton Wheel).
Ganirelix: The Chemistry and Medical Use
Follow the steps below to and solve the question. Please indicate the plans on how to solve it. Indicate a 'plan' on how you intend to solve YOUR problem. You should have a numerical list. These can be phrases (not complete sentences) if you want, as long as the material is sufficiently easy to…
Perform calculations and report answers with correct significant figures for the following equation: 4.54(2.8-0.063)/8.50= Use scientific notation when necessary.
Follow the steps below to and solve the question. Please indicate the plans on how to solve it. Indicate a 'plan' on how you intend to solve YOUR problem. You should have a numerical list. These can be phrases (not complete sentences) if you want, as long as the material is sufficiently easy to…
What is the formation of collagen-tannin complex? Explain in brief.
Please use ribulose to create a ring
10. Why does volume decrease with decreasing temperature at constant pressure? Provide a brief explanation.
Show a reaction to account for the drying of the dichloromethane solution with anhydrous MgSO4
Conversion of cysteine to cystine is what kind of reaction?
Divide the numbers 2.0 x 10-5 / 5.0 x 10-7= (Give the answer in standard notation)
What type of piezoelectric properties might you expect for sputtered ZnO films? Would you expect annealing to make a difference? How does annealing change the film structure? Find an article in a scientific journal that discusses ZnO properties to help you answer these questions.
Any suggestion of an ebook that writes the chemical reaction equations for biomolecule qualitative analysis (Molisch test, Biuret test, Lieberman-Buchard, Acrolein, etc.), for free? Also, could you provide the link too?
A standardization with 0% ascorbic acid used up 21.20 ml of DCPIP. When the same DCPIP was used with fresh and commercial apple juice, the volume of DCPIP used is 21.90 ml and 24.80 ml respectively. Calculate the percentage loss of vitamin C in the making of commercial fruit juice compared to…
Can someone give the solutions to these
The mechanism for the coupling reaction between Meldrum's acid and acyl-imidazolide to give 5-(2-(2-azidoethoxy)ethyl)-2,2-dimethyl-1,3-dioxane-4,6-dione. 2. Corrected_text: Give detailed mechanism and the by-products of the condensation reaction between 3-hydroxypropanenitrile and…
conclusion for investigating gas laws
Consider the following oxidation-reduction.
Q. Which of the following statements about lysosomal degradation is false? Q. Proteasome degradation?
Which of the following is the correct match? Question 15 options: decreased HCO3- /normal H2CO3 – Respiratory acidosis normal HCO3- /increased H2CO3 – Metabolic acidosis increased HCO3- /normal H2CO3 – Metabolic alkalosis normal HCO3- /increased H2CO3 – Metabolic acidosis
Draw and provide condensed structural formulas. draw 1,4-dichlorobutane in both the eclipsed AND anti conformations.
2-What is the function of a nebulizer? Briefly explain how it works?
Draw tripeptide of KRE and name label the N and C termini.
Write down all the term symbols for 3d^14p^1, using the Russell-Saunders coupling scheme.
Cancel this question please
1a. Limitations of the Horner-Wadsworth-Emmons reaction (HWE reaction)? 1b. What are the alternative methods for performing the HWE reaction? Please, include sources
Provide a reasonable synthesis of 2-hydroxy-2-methylcyclohexanone from 1-methylcyclohexene.
2-Methylcyclohexanone and 3-methylcyclohexanone are chiral. One of the compounds undergoes racemization in the presence of a strong base. Draw the corresponding enol forms and interpret.
When books are stored in high-humidity environments, the aluminum sulfate will absorb moisture. Eventually, this leads to the production of H+ ions. Ultimately, the problem is the Al3+ ions from the aluminum sulfate. What is the connection between Al3+ and the production of H+ ions? (In…
Show how a dipeptide could be assembled through solution-phase synthesis. Show structures of reactants, products, and reagents (including protecting groups) used in the synthetic sequence.
what is the molecualr geometry for HI?
[OH-]= 1.0 x 10^-6 pOH = log [OH-]= log (1.0 x10^3) Pleas show work Thank YOU!!!
3. For reverse saturation absorption RSA materials, briefly explain why when the light is weak or normal, the light absorption is normal (such as measured light absorbance is 1), but when the light becomes very intense, the materials become more light absorbing (such as the measured light…
What is the hole blocking phenomenon in CFBC desulfurization when using CaCO3? Summarize the techniques for promoting the calcium utilization rate.
Evaluate the square root of 2.69 x 10^-13 and enter the answer in scientific notation.
simple experimental for improved insulating properties for new polyurethane by using turkey feather
QUESTION 21 What happens when a nucleus emits a beta particle? none of these is correct a proton changes into a neutron a neutron changes into a proton the nucleus ejects a particle made of 2 protons and 2 neutrons the nucleus ejects a proton
Write steps showing how you could prepare 2-pentanone from bromopropane (BrCH2CH2CH3). Please use appropriate reagents. Thank you!
Why does naphthalene (C10H8) display a shorter phosphorescence lifetime than perdeuteronaphthalene (C10D8)?
need help with questions one through four in regards to the graphs.
Climate change: Explaining the difference in d18O values measured in water from ice cores during glacial and interglacial periods.
Discuss the importance of redox reactions in air chemistry.
Discuss the importance of redox reactions in air chemistry.
[H3O+] = 8.7 × 10^(-2) M. Express your answer using two decimal places.
In atomic emission spectrometry, internal standard can be used to: Quantify arc measurements Account for instability if emission Correct for self-absorption All of the above
Rh2(but)4 (but = butyrate) forms 1:1 base adducts. The acid parameters are EA = 1.81 and CA = 2.61. The measured enthalpy of adduct formation with CH3CN is -9.3 kcal/mol. Using the EB and CB parameters for CH3CN, calculate the enthalpy of adduct formation and explain the differences between the…
Consider carbonyl complexes of formula MX₅(CO). The carbonyl ligand is often used as a spectral probe. Explain the term "spectral probe" and explain why and how the CO ligand can be used for the measurement of π-back donation.
2. Draw the perspective formulas for the configurational isomers of 2-chloro-3-methylhexane. Remember that a compound containing 2 chiral centers can have a maximum of 4 stereoisomers. Using models will help. Assign R and S configuration to each chiral center.
With clear plots, explain how differential scanning calorimetry and differential thermal analysis can be used to determine the properties of a polymer.
Explain how nanotechnology energy is created
4-iodo-sodium butoxide (ICH2CH2CH2CH2O-Na+) undergoes intramolecular substitution to form a cyclic product. Draw the structure of this product. Indicate by which mechanism the product is formed (SN1 or SN2)?
1.1 Explain how titration might be used to determine the effects of acid rain on the environment. 1.2. Explain how titration might be used for medical testing.
Calculate and give the answer with the correct number of significant figures 1) 3.256 / 2.7 2) 14.88 * 3.77 3) 12.699 * 5 4) 1.333 + 2.62 5) 14.365 + 259.1 6) 2.3 – 1.1 + 3.563 7) 15.8 – 12.3 8) 14.8855 / 5.698 + 3.329 – 26.3 9) 32.021 + 2.034 10) 20.99002 – 2.43 11) 20152+890.67
An experiment involved making a racemic product and then resolving it. However, chiral resolutions are often inefficient ways to prepare a desired enantioenriched material. Describe why this is the case.
Discuss why at relatively low temperatures, the introduction of these extrinsic defects into a material with Schottky defects typically increases ionic conductivity, while the introduction of such extrinsic defects into a material with Frenkel defects commonly initially decreases ionic…
What is the purpose of an accelerated aging study?
Write the name:
Explain briefly, the mechanism of how the activity of radioactive material will relate to the exposure effects?
these numbers are used to _ the equation because chemical reactions must obey the law of _ of matter
Convert the following numbers expressed in scientific notation to ordinary numbers: 10^5 10^6 10^-5 10^-6
Why everyone should have some basic understanding of chemistry ?
synthesis of the drug fluoxetine ?!
Propose a reaction that t-butyllithium undergoes when exposed to air. Please also explain why this reaction is so violent.
3. Explain what a terpene is and what a terpenoid is, and give two examples of each of them.
1. Indicate whether the conversion of C3H8 → 3C + 4H2 is exothermic or endothermic. How did you reach that conclusion? 2. Explain why the 2d^11 (where n=2, l=2) configuration is not correct and which principles are violated.
Conclusion for Melting point of Urea Objectives: Purpose of Melting point Effect of impurities in a product and how they cause melting point depression.
Text: 15 pts Answer the following questions using the equation below: dU = TdS − pdV For the equation above, find dU and dS and give a physical interpretation of these quantities. Derive the corresponding Maxwell's relation. Explain why this equation is called the fundamental equation of…
m) Gabriel's synthesis of an amine n) Hofmann elimination o) Hofmann rearrangement p) N-nitrosoamine q) Reductive amination r) Sandmeyer reaction
C/CH3CH2\H3C=C\CH2CH2C|CH3HCH3/CH2CH3
In its enantiopure form, an (S) enantiomer has an optical rotation of +53 degree. If a solution that is 75% (R) and 25% (S) exists, what is the enantiomeric excess (ee)? What would be the observed rotation for the mixture?
Perform the following calculations and report the answer with the correct number of significant figures. (53.9 + 11.21) x 10.3
Provide a reasonable synthetic strategy with proper explanation (regiochemical/stereochemical details) for the synthesis of trans-1,2-cyclohexanediol from bromocyclohexane. Please show each individual step of the reaction indicating the reagents, reaction conditions, major and minor products…
2) What is the difference between crystalline and colloidal precipitate? 3) How can we obtain crystalline precipitate? Colloidal precipitate? 4) What is the aim of the digestion process? 5) What type of ligand is DMG? 6) Why is bringing to constant mass an important step in gravimetric…
21. Convert 4.572 x 10^-19 L/m^2 to gal/m^2.
Convert 3.2 ft2 to in2.
200 word summary Discuss how the three internal governance mechanisms are used to align the interests of managerial agents with those of the firm's owners. Why is this so critical in today's business climate where the ethics practiced by firms are constantly being scrutinized?
9) Why does the vapor pressure of a liquid increase as temperature increases?
I don't know if my last posted question has been solved. Thanks and remain blessed.
Why must the instrument readout for an unknown fall within the range of of readouts for a series of standard solutions in order to be accurate?
what interactions appear to drive favorable binding in ER for phthalates, and how one could modify the generic phthalate scaffold to lower binding?
Which "cartoon" best represents the structure of a phosphatidylglycerol? a b c
This reaction takes place in an aqueous acidic solution, Cr2 O7 2- + Sn 2+ ---> Sn 4+ + Cr3+ , When balanced, the smallest whole number coefficient for Cr 3+ ? Group of answer choices 2 6 8 4
6. What are optical fibers? Explain step-in optical filers along with their manufacture, properties and applications?
Please solve it as soon as possible. How will dilution and digestion influence the formation of precipitate?
appearance of olive oil after addition of hexanes
Multiply the numbers and round the answer to the correct number of significant figures. 3.803 × 0.54 =
Show the glucoside that forms with the monosaccharide in Q13 reacts with cyclohexanol. Is the glycoside reducing or nonreducing? Explain. Q13: Draw the Haworth Projection of a ketohexose with alpha-configuration.
Friedel-Crafts alkylations can be very tricky to control. What are some of the experimental things that can be done to help control the reaction?
5.3 cm^3 = ____ml.
Please answer the following questions before beginning the experiment. Think carefully before making your predictions, but don't worry if you aren't sure what will happen. In every case, give a reason for your prediction—guessing is perfectly acceptable, but if you are only guessing, just say…
4. Why was the title of this module "Energy and the Electromagnetic Spectrum" and what does the descriptor of "What you can't see can hurt you" mean?
Design a polymeric material with certain properties and explain its synthesis scheme/reactions related to your solution. (Please design and synthesize a polymeric material with certain properties.)
Propose a synthesis of ala-gly starting from propanoic acid. Show the product of each step in your synthesis.
Explain briefly how distillation allows the separation of the target product from residual 2-methyl-2-butanol. Use relevant literature physical property data to support your explanation. (2-3 sentences maximum)
What process is responsible for solar radiation being absorbed and releasing energy as heat in the thermosphere? 1. photoionization 2. excitation of molecular rotations 3. photodissociation 4. excitation of molecular vibrations
undefined Cut-off Filters: In this type of filters, transmittance of about is zero observed for a portion of the visible spectrum, which rapidly increases to 100% over the remainder of the spectrum Select one: True False
The ability of a grating monochromators to separate adjacent wavelengths, with very small difference, is referred to as the resolving power Select one: True False
Q1. Give ANY 1 research article which uses HPLC in the detection of biomolecules. Give all the details about the experimental parts, the detection limit, the chromatograms, etc.
The correct name for an aqueous solution of H2CO3 is Select one: a. carbonic acid b. hydrogen carbonate c. carbonous acid d. hydrocarbonic acid
I do not need any help with this, thank you.
What is the principle of distillation?
BIOCHEMISTRY. Write the reaction(s) in which S-adenosylmethionine is used in the synthesis of phophatidylcholine from phosphatidylethanolamine.
What is the pH of each of the following solutions? Part A 5.0×10^(-3) M HCl Express your answer using two decimal places. pH = Part B 6.22×10^(-4) M HNO3 Express your answer using three decimal places. pH = Part C 6.73×10^(-3) M NaOH Express your answer using three decimal places.
Derivation of Thermodynamic Equilibrium
What is the name for the compound P4F6?
D-Idose is called a reducing sugar because it undergoes an oxidation-reduction reaction at the anomeric carbon. One of the products of this reaction is A. D-Idaric acid B. D-Iduronic acid C. D-Idonic acid D. Muramic acid
EM Radiation & Its Interaction with Matter 3. Calculate the wavelength of an EM wave whose frequency is 2.0 x 1014 Hz. (Hz = waves / 1 s, which is often written as (1 / s) or just s-1) c = 3.0 x 108 m / s
Give a definition for isolobality among outgroup element complexes. Check the following three complexes for isolobality by plotting the MO scheme of: -Mn(CO)4 (KZ=8) -Co(CO)(Cp) (KZ=6) -Nb(Cp)2 (KZ=9)
Give the name and formula of the compound formed from the following elements. Be sure to substitute the appropriate atomic symbols for "Q" and "R" in each formula. (a) 38Q and 7R Name: (select)strontiumcadmiumbariumzinc (select)nitridecarbidephosphideoxide Formula: (b) 16Q and 12R Name:…
Express 7.5 m as millimeters. A) 7.50 mm B) 75.0 mm C) 7500 mm D) 7.5 × 106 mm E) 7.5 × 1012 mm
[OH] 3.16 x 10^-2M - Is this solution acidic or basic?
Why do precipitation reactions usually favor product formation? Explain
(1) Synthesize 2-Butanol using a nucleophilic substitution reaction. (2) Synthesize 2-Butanol using Grignard reaction. (3) Synthesize 2-Butanol using the reduction of carbonyl compounds. I didn't recognize teacher's handwriting when you told me last time. I would appreciate it if you write it…
State which mode (localized surface plasmon mode (LSPM) or propagating surface plasmon mode (PSPM)) is preferred for Raman enhancement in conventional Raman microscopy.
Give a synthesis of 2,2-dimethyl-1,3-cyclohexanedione from methyl 5-oxohexanoate.
Back to basic, how did you know bulb 5 was the closest to equilibrium?
What is a monochromator? Discuss the difference between an optical filter and a diffraction grating.
6. Below is shown the structure of ethyl valerate, which has the flavor of apples. Give the structures of the carboxylic acid and the alcohol that are used to synthesize this ester.
Is VO4^3- ----> VO2+ a reduction or oxidation? Is SO3^2- ----> SO4^2- a reduction or oxidation?
Draw the structure of a phosphonate-stabilized ylide (used in the HWE) and phosphonium ylide (used in the Wittig reaction)
State the conditions under which the quadratic expression can be simplified. (equilibrium)
5. Suggest the structure of the [Ru3(CO)12] complex. In which region of the IR spectrum would you expect to observe the absorptions of C-O stretches for this compound?
Draw the following in a furanose form in a Haworth projection.
28) Convert 12.86 grams to ounces (Show work for full credit). Conversion factor is 1 gram = 0.032 ounce
Which formula correctly represents a simple monosaccharide? C4H6O4 C5H5O5 C6H12O6 C4H8O4
0.35 oz to mg ??
BeH compound geometry ?
When electrons fall back to lower energy levels in an atom, they give off certain frequencies of energy. How can this phenomenon be used to identify the type of atom?
Explain the process involved in the manufacturing of the plastic chair and name TWO (2) additives that can be added in order to prolong the life of the outdoor chair.
reactions with Isopropanol, I need 2
Devise a synthesis for p-nitroacetophenone from acetophenone
explain about N-heterocyclic Carbene (NHC) compound?
Convert 12 ft^3 to km^3
Starting with trilinolein, write reactions for the formation of biodiesel and sodium soap.
Can you please explain how do I change 2 -methylpentane into a condense, expanded, and skeletal formula. Thanks!
1R borneol with oxone vs 1S borneol with oxone... How are the products different? Please write out and describe.
The problem is PHOTOCHEMICAL SMOG. Please make a detailed consequence map that determines the following: 1. MAIN CAUSE 2. CONSEQUENCES THAT LEAD UP TO THE PROBLEM 3. THE CHEMISTRY OF THE PROBLEM 4. HOW THIS PROBLEM BEGAN. The output should not be plagiarized from the internet. The consequence…
How is extraction based? How can we do the extraction in the most efficient way? (plus formula)
Ni2+ can be precipitated as NiS using a saturated solution of H2S. To ensure complete precipitation of the Ni2+ ion, should one use a solution of high pH or low pH, explain. Reaction equations may be used. [H+ ]^2 [S2- ] = 2.1 x 10-22
What is reciprocal regulation? what is the role of phosphorylation in regulation?
1. Rationalize the selectivity observed in the benzil reduction. Draw the transition states of the nucleophilic attack leading to either meso or racemic products and indicate why one is more stable than the other. 2. Why was it important to keep the dioxolane derivative cold and dry after it…
Destruction of RBCs: A Normal Process
H10.3 Level1
Provide the following information for element number 17. The element's name: Chlorine The element's symbol: Cl The element's nuclear charge (Z): 17 The number of valence electrons: 7 The number of core electrons: 10 The symbol of another element with the same number of valence electrons:…
26a. What is the mechanism when 2-Hydroxy-1-phenyl-1-ethanone reacts with LiAlH4 and THF, followed by a dilute acid reaction.
[H3O+]=4.4×10^(-11) M
Q2. What are the basic rules used for the nomenclature of coordination compounds?
13. A classmate is having difficulty understanding how the concepts of open system, closed system and insulated system and how they are related to exothermic and endothermic reactions. Write a note to explain to your classmate how the concepts are related. Use diagrams to help clarify your…
HOCH2CH2OH is a
From the following formula, calculate the amount of each ingredient required to make 16 fl oz of lotion. Express all answers in metric system units, and round each final answer to two decimal places. Calamine 35 g Zinc Oxide 0.6 oz Glycerin 15 mL Bentonite Magma 1.5 fl oz Calcium Hydroxide…
Perform this calculation with the correct number of significant figures below (Must show your work): (2.333 x 1.22) / (0.0007 x 1.24) =
Briefly, but informatively, discuss the methods of atomisation for atomic absorption spectroscopy instrument.
Worked problem: Write the mechanism for the transesterification
Q1. What are pericyclic reactions? Q2. Explain sigmatropic rearrangement in detail.
A nonapeptide released by globulins in the blood in response to a wasp sting. Hydrolysis gives the following amino acids: 2 Arg, Gly, 2 Phe, 3 Pro, and Ser. Edman degradation gives phenylthiohydantoin of Arg. Cleavage with carboxypeptidase gives Arg. Partial hydrolysis gives the following di-…
use correct # of S.F. USE standard notation NOT scientific notation 71.235-0.23
From the following separations of vibrational levels in the ground electronic state of CO, obtain values of 𝛚e, 𝛚exe, and De. 𝑣’-𝑣'' 1-0 2-1 3-2 4-3 5-4 6-5 ∆G/cm-1 2143.1 2116.1 2088.9 2061.3 2033.5 …
Explain in terms of τ₀, the rate coefficient of internal conversion (kIC), and the rate coefficient of intersystem crossing (kISC) why compounds in which the lowest excited singlet state is nπ* in nature do not usually fluoresce strongly.
For the resolution of racemic naproxen using N-octyl-D-glucamine as a resolving agent, please draw out the specific reactions used in the separation process.
4. (10) Why do the palladium catalyzed reactions usually need a base as part of the reaction?
Unknowns are p-toluic acid and benzophenone. Look for the derivatives to prepare for the assigned unknowns (see unknowns names above). (2 each, total 4 derivatives). Write procedures for the derivatives with melting point and solubility information.
How is cooking like a chemical reaction?
–0.0085 m – (9.5 × 10^–3 m) = ? Give your answer with the correct number of significant figures and express the answer in scientific notation. Enter your answer without the units, using the format: 1.23 x 10^3 enter as: 1.23*10^3 5.67 x 10^–8 enter as: 5.67*10^–8
Please provide a reaction for the formation of an amide when N-methyl-n-propylamine reacts with butanoic acid.
why is it important to allow crysrals to grow slowly?
Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES)
Round 6.9840063 × 106 to 5 significant digits. Round 6.9840063 × 106 to 3 significant digits.
Explain how proton NMR could be used to confirm product formation. Refer to specific splitting patterns and characteristic chemical shifts. The product here is 2-hydroxy-5-nitrobenzonitrile.
What is the name of SiF6?
Answer the following question. Give the answer in decimal notation to the correct number of significant figures. 3 +4.32 x 2.515
2-What is graphene? Explain the origin of the D, G, and 2D peaks in a Raman spectrum of graphene. What happens to the G and 2D peak as the number of layers of graphene increases?
Briefly distinguish between the following terms with appropriate examples: a. Epimers and diastereomers b. Aldoses and ketoses
Explain how a nuclear fission reaction can be controlled to produce heat for power generation, rather than an explosion.
Describe how ligands properties can be parameterized. Give both classic and more modern approaches to these parameters.
explain faradays law
Glycerolipid Biosynthesis Name the enzymes and draw the reactions of the Kennedy pathway for triacylglycerol biosynthesis, and identify which intermediates are branch points for phospholipid biosynthesis. Name the enzymes and draw the reactions for the synthesis of phosphatidylcholine.
5. What are the coenzymes? How do they function?
What is happening when you see an effervescence after adding NaBH4.
3. Complete the following calculations expressing the result in the correct number of unambiguous significant figures. a. 8.9945 + 0.466543 = _____________ b. 100.00 – 0.001369 = _____________ c. 844 ÷ 4 = _____________
7. Analyze the IR spectra of the starting material and the main product of the benzyl alcohol synthesis. Check the signals (bands) that confirm their functionalities.
2) Discuss the electrical properties of the sols.
For the reduction of benzoin, use Cram's Rule or the Felkin model for asymmetric nucleophilic attack on chiral compounds to predict which diastereomeric product (racemate or meso) should be obtained. The response should include the appropriate depiction of the transition state for the…
Sketch the resulting product of 2,4-DNP with CH3COCH3
Define the word spectrophotometer 2. What determines the color of a solution? 3. What determines the intensity of the color of a solution?
What product is formed (chalcone) from 1-indanone and p-Chlorobenzaldehyde?
what is chemistry
Corrosion is usually related to the segregation of specific elements or the formation of a compound at the boundary.
25) When the astronauts were on the moon, they could see the earth, but could not hear a sound?
product for iso-propanol + methanol?
Question 1. Referring to the following reaction: B2H6 + Na+[BH4]‒ → Na+[B3H8]‒ + H2 [B3H8]‒ = Classify the anion [B3H8]‒ as nido, closo, or arachno based on molecular formula and shape. Explain if [B3H8]‒ is either nido, closo, or arachno, and why it is not the others. Answer: [6…
When using the Trizol method for isolating RNA, which organic chemical is capable of causing chemical burns to the skin?
Why is gravimetry and titrimetry considered as absolute methods? What is the measured quantity in the case of these methods, and how can they be transformed into concentration? Describe the method applicable to determine the organic component concentration in a powder sample. Describe the…
Given the following data pairs (x, y), find the regression equation. (1, 1.24), (2, 5.23), (3,7.24),(4,7.60), (5, 9.97), (6, 14.31), (7.13.99), (8, 14.88), (9, 18.04), (10, 20.70) ŷ = 2.040 ŷ = 1.982 – 0.436 ŷ = 0.490.2 - 0.053 ŷ = 0.490.2 None
Why are film formers and solvents important in sunscreen formulations?
2) Explain The Phenomenon Of Complementary Colors (Hint: Newton Wheel).
Ganirelix: The Chemistry and Medical Use
Follow the steps below to and solve the question. Please indicate the plans on how to solve it. Indicate a 'plan' on how you intend to solve YOUR problem. You should have a numerical list. These can be phrases (not complete sentences) if you want, as long as the material is sufficiently easy to…
Perform calculations and report answers with correct significant figures for the following equation: 4.54(2.8-0.063)/8.50= Use scientific notation when necessary.
Follow the steps below to and solve the question. Please indicate the plans on how to solve it. Indicate a 'plan' on how you intend to solve YOUR problem. You should have a numerical list. These can be phrases (not complete sentences) if you want, as long as the material is sufficiently easy to…
What is the formation of collagen-tannin complex? Explain in brief.
Please use ribulose to create a ring
10. Why does volume decrease with decreasing temperature at constant pressure? Provide a brief explanation.
Show a reaction to account for the drying of the dichloromethane solution with anhydrous MgSO4
Conversion of cysteine to cystine is what kind of reaction?
Divide the numbers 2.0 x 10-5 / 5.0 x 10-7= (Give the answer in standard notation)
What type of piezoelectric properties might you expect for sputtered ZnO films? Would you expect annealing to make a difference? How does annealing change the film structure? Find an article in a scientific journal that discusses ZnO properties to help you answer these questions.
Any suggestion of an ebook that writes the chemical reaction equations for biomolecule qualitative analysis (Molisch test, Biuret test, Lieberman-Buchard, Acrolein, etc.), for free? Also, could you provide the link too?
A standardization with 0% ascorbic acid used up 21.20 ml of DCPIP. When the same DCPIP was used with fresh and commercial apple juice, the volume of DCPIP used is 21.90 ml and 24.80 ml respectively. Calculate the percentage loss of vitamin C in the making of commercial fruit juice compared to…
Can someone give the solutions to these
The mechanism for the coupling reaction between Meldrum's acid and acyl-imidazolide to give 5-(2-(2-azidoethoxy)ethyl)-2,2-dimethyl-1,3-dioxane-4,6-dione. 2. Corrected_text: Give detailed mechanism and the by-products of the condensation reaction between 3-hydroxypropanenitrile and…
conclusion for investigating gas laws
Q. Which of the following statements about lysosomal degradation is false? Q. Proteasome degradation?
Which of the following is the correct match? Question 15 options: decreased HCO3- /normal H2CO3 – Respiratory acidosis normal HCO3- /increased H2CO3 – Metabolic acidosis increased HCO3- /normal H2CO3 – Metabolic alkalosis normal HCO3- /increased H2CO3 – Metabolic acidosis
Draw and provide condensed structural formulas. draw 1,4-dichlorobutane in both the eclipsed AND anti conformations.
2-What is the function of a nebulizer? Briefly explain how it works?
Draw tripeptide of KRE and name label the N and C termini.
Write down all the term symbols for 3d^14p^1, using the Russell-Saunders coupling scheme.
1a. Limitations of the Horner-Wadsworth-Emmons reaction (HWE reaction)? 1b. What are the alternative methods for performing the HWE reaction? Please, include sources
Provide a reasonable synthesis of 2-hydroxy-2-methylcyclohexanone from 1-methylcyclohexene.
2-Methylcyclohexanone and 3-methylcyclohexanone are chiral. One of the compounds undergoes racemization in the presence of a strong base. Draw the corresponding enol forms and interpret.
When books are stored in high-humidity environments, the aluminum sulfate will absorb moisture. Eventually, this leads to the production of H+ ions. Ultimately, the problem is the Al3+ ions from the aluminum sulfate. What is the connection between Al3+ and the production of H+ ions? (In…
Show how a dipeptide could be assembled through solution-phase synthesis. Show structures of reactants, products, and reagents (including protecting groups) used in the synthetic sequence.
what is the molecualr geometry for HI?
[OH-]= 1.0 x 10^-6 pOH = log [OH-]= log (1.0 x10^3) Pleas show work Thank YOU!!!
3. For reverse saturation absorption RSA materials, briefly explain why when the light is weak or normal, the light absorption is normal (such as measured light absorbance is 1), but when the light becomes very intense, the materials become more light absorbing (such as the measured light…
What is the hole blocking phenomenon in CFBC desulfurization when using CaCO3? Summarize the techniques for promoting the calcium utilization rate.
Evaluate the square root of 2.69 x 10^-13 and enter the answer in scientific notation.
simple experimental for improved insulating properties for new polyurethane by using turkey feather
QUESTION 21 What happens when a nucleus emits a beta particle? none of these is correct a proton changes into a neutron a neutron changes into a proton the nucleus ejects a particle made of 2 protons and 2 neutrons the nucleus ejects a proton
Write steps showing how you could prepare 2-pentanone from bromopropane (BrCH2CH2CH3). Please use appropriate reagents. Thank you!
Why does naphthalene (C10H8) display a shorter phosphorescence lifetime than perdeuteronaphthalene (C10D8)?
need help with questions one through four in regards to the graphs.
Climate change: Explaining the difference in d18O values measured in water from ice cores during glacial and interglacial periods.
Discuss the importance of redox reactions in air chemistry.
Discuss the importance of redox reactions in air chemistry.
[H3O+] = 8.7 × 10^(-2) M. Express your answer using two decimal places.
In atomic emission spectrometry, internal standard can be used to: Quantify arc measurements Account for instability if emission Correct for self-absorption All of the above
Rh2(but)4 (but = butyrate) forms 1:1 base adducts. The acid parameters are EA = 1.81 and CA = 2.61. The measured enthalpy of adduct formation with CH3CN is -9.3 kcal/mol. Using the EB and CB parameters for CH3CN, calculate the enthalpy of adduct formation and explain the differences between the…
Consider carbonyl complexes of formula MX₅(CO). The carbonyl ligand is often used as a spectral probe. Explain the term "spectral probe" and explain why and how the CO ligand can be used for the measurement of π-back donation.
2. Draw the perspective formulas for the configurational isomers of 2-chloro-3-methylhexane. Remember that a compound containing 2 chiral centers can have a maximum of 4 stereoisomers. Using models will help. Assign R and S configuration to each chiral center.
With clear plots, explain how differential scanning calorimetry and differential thermal analysis can be used to determine the properties of a polymer.
Explain how nanotechnology energy is created
4-iodo-sodium butoxide (ICH2CH2CH2CH2O-Na+) undergoes intramolecular substitution to form a cyclic product. Draw the structure of this product. Indicate by which mechanism the product is formed (SN1 or SN2)?
Calculate and give the answer with the correct number of significant figures 1) 3.256 / 2.7 2) 14.88 * 3.77 3) 12.699 * 5 4) 1.333 + 2.62 5) 14.365 + 259.1 6) 2.3 – 1.1 + 3.563 7) 15.8 – 12.3 8) 14.8855 / 5.698 + 3.329 – 26.3 9) 32.021 + 2.034 10) 20.99002 – 2.43 11) 20152+890.67
An experiment involved making a racemic product and then resolving it. However, chiral resolutions are often inefficient ways to prepare a desired enantioenriched material. Describe why this is the case.
Discuss why at relatively low temperatures, the introduction of these extrinsic defects into a material with Schottky defects typically increases ionic conductivity, while the introduction of such extrinsic defects into a material with Frenkel defects commonly initially decreases ionic…
What is the purpose of an accelerated aging study?
Write the name:
Explain briefly, the mechanism of how the activity of radioactive material will relate to the exposure effects?
Convert the following numbers expressed in scientific notation to ordinary numbers: 10^5 10^6 10^-5 10^-6
Why everyone should have some basic understanding of chemistry ?
synthesis of the drug fluoxetine ?!
Propose a reaction that t-butyllithium undergoes when exposed to air. Please also explain why this reaction is so violent.
3. Explain what a terpene is and what a terpenoid is, and give two examples of each of them.
1. Indicate whether the conversion of C3H8 → 3C + 4H2 is exothermic or endothermic. How did you reach that conclusion? 2. Explain why the 2d^11 (where n=2, l=2) configuration is not correct and which principles are violated.
Conclusion for Melting point of Urea Objectives: Purpose of Melting point Effect of impurities in a product and how they cause melting point depression.
Text: 15 pts Answer the following questions using the equation below: dU = TdS − pdV For the equation above, find dU and dS and give a physical interpretation of these quantities. Derive the corresponding Maxwell's relation. Explain why this equation is called the fundamental equation of…
m) Gabriel's synthesis of an amine n) Hofmann elimination o) Hofmann rearrangement p) N-nitrosoamine q) Reductive amination r) Sandmeyer reaction
C/CH3CH2\H3C=C\CH2CH2C|CH3HCH3/CH2CH3
In its enantiopure form, an (S) enantiomer has an optical rotation of +53 degree. If a solution that is 75% (R) and 25% (S) exists, what is the enantiomeric excess (ee)? What would be the observed rotation for the mixture?
Perform the following calculations and report the answer with the correct number of significant figures. (53.9 + 11.21) x 10.3
Provide a reasonable synthetic strategy with proper explanation (regiochemical/stereochemical details) for the synthesis of trans-1,2-cyclohexanediol from bromocyclohexane. Please show each individual step of the reaction indicating the reagents, reaction conditions, major and minor products…
2) What is the difference between crystalline and colloidal precipitate? 3) How can we obtain crystalline precipitate? Colloidal precipitate? 4) What is the aim of the digestion process? 5) What type of ligand is DMG? 6) Why is bringing to constant mass an important step in gravimetric…
21. Convert 4.572 x 10^-19 L/m^2 to gal/m^2.
Convert 3.2 ft2 to in2.
200 word summary Discuss how the three internal governance mechanisms are used to align the interests of managerial agents with those of the firm's owners. Why is this so critical in today's business climate where the ethics practiced by firms are constantly being scrutinized?
9) Why does the vapor pressure of a liquid increase as temperature increases?
I don't know if my last posted question has been solved. Thanks and remain blessed.
what interactions appear to drive favorable binding in ER for phthalates, and how one could modify the generic phthalate scaffold to lower binding?
Which "cartoon" best represents the structure of a phosphatidylglycerol? a b c
This reaction takes place in an aqueous acidic solution, Cr2 O7 2- + Sn 2+ ---> Sn 4+ + Cr3+ , When balanced, the smallest whole number coefficient for Cr 3+ ? Group of answer choices 2 6 8 4
6. What are optical fibers? Explain step-in optical filers along with their manufacture, properties and applications?
Please solve it as soon as possible. How will dilution and digestion influence the formation of precipitate?
appearance of olive oil after addition of hexanes
Multiply the numbers and round the answer to the correct number of significant figures. 3.803 × 0.54 =
Show the glucoside that forms with the monosaccharide in Q13 reacts with cyclohexanol. Is the glycoside reducing or nonreducing? Explain. Q13: Draw the Haworth Projection of a ketohexose with alpha-configuration.
Friedel-Crafts alkylations can be very tricky to control. What are some of the experimental things that can be done to help control the reaction?
5.3 cm^3 = ____ml.
Please answer the following questions before beginning the experiment. Think carefully before making your predictions, but don't worry if you aren't sure what will happen. In every case, give a reason for your prediction—guessing is perfectly acceptable, but if you are only guessing, just say…
4. Why was the title of this module "Energy and the Electromagnetic Spectrum" and what does the descriptor of "What you can't see can hurt you" mean?
Design a polymeric material with certain properties and explain its synthesis scheme/reactions related to your solution. (Please design and synthesize a polymeric material with certain properties.)
Propose a synthesis of ala-gly starting from propanoic acid. Show the product of each step in your synthesis.
Explain briefly how distillation allows the separation of the target product from residual 2-methyl-2-butanol. Use relevant literature physical property data to support your explanation. (2-3 sentences maximum)
undefined Cut-off Filters: In this type of filters, transmittance of about is zero observed for a portion of the visible spectrum, which rapidly increases to 100% over the remainder of the spectrum Select one: True False
Q1. Give ANY 1 research article which uses HPLC in the detection of biomolecules. Give all the details about the experimental parts, the detection limit, the chromatograms, etc.
The correct name for an aqueous solution of H2CO3 is Select one: a. carbonic acid b. hydrogen carbonate c. carbonous acid d. hydrocarbonic acid
I do not need any help with this, thank you.
What is the principle of distillation?
BIOCHEMISTRY. Write the reaction(s) in which S-adenosylmethionine is used in the synthesis of phophatidylcholine from phosphatidylethanolamine.
What is the pH of each of the following solutions? Part A 5.0×10^(-3) M HCl Express your answer using two decimal places. pH = Part B 6.22×10^(-4) M HNO3 Express your answer using three decimal places. pH = Part C 6.73×10^(-3) M NaOH Express your answer using three decimal places.
Derivation of Thermodynamic Equilibrium
What is the name for the compound P4F6?
D-Idose is called a reducing sugar because it undergoes an oxidation-reduction reaction at the anomeric carbon. One of the products of this reaction is A. D-Idaric acid B. D-Iduronic acid C. D-Idonic acid D. Muramic acid
EM Radiation & Its Interaction with Matter 3. Calculate the wavelength of an EM wave whose frequency is 2.0 x 1014 Hz. (Hz = waves / 1 s, which is often written as (1 / s) or just s-1) c = 3.0 x 108 m / s
Give a definition for isolobality among outgroup element complexes. Check the following three complexes for isolobality by plotting the MO scheme of: -Mn(CO)4 (KZ=8) -Co(CO)(Cp) (KZ=6) -Nb(Cp)2 (KZ=9)
Give the name and formula of the compound formed from the following elements. Be sure to substitute the appropriate atomic symbols for "Q" and "R" in each formula. (a) 38Q and 7R Name: (select)strontiumcadmiumbariumzinc (select)nitridecarbidephosphideoxide Formula: (b) 16Q and 12R Name:…
Express 7.5 m as millimeters. A) 7.50 mm B) 75.0 mm C) 7500 mm D) 7.5 × 106 mm E) 7.5 × 1012 mm
[OH] 3.16 x 10^-2M - Is this solution acidic or basic?
Why do precipitation reactions usually favor product formation? Explain
(1) Synthesize 2-Butanol using a nucleophilic substitution reaction. (2) Synthesize 2-Butanol using Grignard reaction. (3) Synthesize 2-Butanol using the reduction of carbonyl compounds. I didn't recognize teacher's handwriting when you told me last time. I would appreciate it if you write it…
State which mode (localized surface plasmon mode (LSPM) or propagating surface plasmon mode (PSPM)) is preferred for Raman enhancement in conventional Raman microscopy.
Give a synthesis of 2,2-dimethyl-1,3-cyclohexanedione from methyl 5-oxohexanoate.
What is a monochromator? Discuss the difference between an optical filter and a diffraction grating.
6. Below is shown the structure of ethyl valerate, which has the flavor of apples. Give the structures of the carboxylic acid and the alcohol that are used to synthesize this ester.
Is VO4^3- ----> VO2+ a reduction or oxidation? Is SO3^2- ----> SO4^2- a reduction or oxidation?
Draw the structure of a phosphonate-stabilized ylide (used in the HWE) and phosphonium ylide (used in the Wittig reaction)
State the conditions under which the quadratic expression can be simplified. (equilibrium)
5. Suggest the structure of the [Ru3(CO)12] complex. In which region of the IR spectrum would you expect to observe the absorptions of C-O stretches for this compound?
Draw the following in a furanose form in a Haworth projection.
28) Convert 12.86 grams to ounces (Show work for full credit). Conversion factor is 1 gram = 0.032 ounce
Which formula correctly represents a simple monosaccharide? C4H6O4 C5H5O5 C6H12O6 C4H8O4
0.35 oz to mg ??
BeH compound geometry ?
When electrons fall back to lower energy levels in an atom, they give off certain frequencies of energy. How can this phenomenon be used to identify the type of atom?
Explain the process involved in the manufacturing of the plastic chair and name TWO (2) additives that can be added in order to prolong the life of the outdoor chair.
reactions with Isopropanol, I need 2
Devise a synthesis for p-nitroacetophenone from acetophenone
explain about N-heterocyclic Carbene (NHC) compound?
Convert 12 ft^3 to km^3
Starting with trilinolein, write reactions for the formation of biodiesel and sodium soap.
Can you please explain how do I change 2 -methylpentane into a condense, expanded, and skeletal formula. Thanks!
1R borneol with oxone vs 1S borneol with oxone... How are the products different? Please write out and describe.
The problem is PHOTOCHEMICAL SMOG. Please make a detailed consequence map that determines the following: 1. MAIN CAUSE 2. CONSEQUENCES THAT LEAD UP TO THE PROBLEM 3. THE CHEMISTRY OF THE PROBLEM 4. HOW THIS PROBLEM BEGAN. The output should not be plagiarized from the internet. The consequence…
How is extraction based? How can we do the extraction in the most efficient way? (plus formula)
Ni2+ can be precipitated as NiS using a saturated solution of H2S. To ensure complete precipitation of the Ni2+ ion, should one use a solution of high pH or low pH, explain. Reaction equations may be used. [H+ ]^2 [S2- ] = 2.1 x 10-22
What is reciprocal regulation? what is the role of phosphorylation in regulation?
1. Rationalize the selectivity observed in the benzil reduction. Draw the transition states of the nucleophilic attack leading to either meso or racemic products and indicate why one is more stable than the other. 2. Why was it important to keep the dioxolane derivative cold and dry after it…
Destruction of RBCs: A Normal Process
H10.3 Level1
Provide the following information for element number 17. The element's name: Chlorine The element's symbol: Cl The element's nuclear charge (Z): 17 The number of valence electrons: 7 The number of core electrons: 10 The symbol of another element with the same number of valence electrons:…
26a. What is the mechanism when 2-Hydroxy-1-phenyl-1-ethanone reacts with LiAlH4 and THF, followed by a dilute acid reaction.
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