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March 17, 2025
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March 17 of 2025
Using the micrograph image and the ruler scale to determine the length of the mitochondrion in nanometres (nm). Similar to Q.2 part a) you need to measure the length of the mitochondria in cm and use the value for one mm division to determine the length in nm. This will give you the actual…
of Q.2 you need to use the eye-piece lens magnification, and objective lens magnification shown to the right of the cell image to calculate the magnification of the image. Part b) again requires you to measure the size of a cell (this time a white blood cell) from the ruler scale given but this…
Q.1 part a i) requires you to measure the image size if the red blood cell (using the ruler scale given) and you will need to then convert the measurement from cm to micrometres (µm) in preparation for part ii). With part ii) you need to use the magnification triangular equation to calculate…
Suppose you are titrating vinegar, which is an acetic acid solution, of unknown strength with sodium hydroxide according to the equation HC2H3O2 + NaOH ? H2O + NaC2H3O2 If you require 32.17 mL of 0.116 M NaOH solution to titrate 10.0 mL of HC2H3O2 solution, what is the concentration of acetic…
The hydrolysis of methyl acetate in an autocatalytic reaction and is first order with respect to both methyl acetate and acetic acid. The reaction is elementary, bimolecular and can be considered irreversible at constant volume for design purposes. The following data are given: Initial…
Analysis of pH measurements of solutions after the addition of HCl | | Initial pH | pH after 5 drops HCl | pH after 10 drops HCl | Total pH change | Buffer (Y or N) | |---|---|---|---|---|---| | H?O | 7.00 | 2.00 | 1.10 | | Choose... Yes | | 0.1 M NaCl | 7.00 | 2.00 | 0.70 | | Choose... Yes…
Calculations for the titration of vinegar with sodium hyroxide | | Trial 1 | Trial 2 | Trial 3 | | :--- | :--- | :--- | :--- | | Volume of vinegar (mL) | 5.00 | 5.00 | 5.00 | | Final volume NaOH (mL) | 46.15 | 46.61 | 45.82 | | Inital volume NaOH (mL) | 0.00 | 0.25 | 0.00 | | Volume NaOH used…
For the reaction that can be written as A→B→C, the value of k1 is 5.65x10-3 /min and the time necessary to reach the maximum concentration of B is 26 min. What is the value of k2? A.) 0.3459 C.) 0.1246 B.) 0.7763 D.) 0.1231
Analysis of pH measurements of solutions after the addition of NaOH | | Initial pH | pH after 5 drops NaOH | pH after 10 drops NaOH | Total pH change | Buffer (Y or N) | |---|---|---|---|---|---| | H?O | 7.00 | 7.00 | 10.30 | | Yes | | 0.1 M NaCl | 11.90 | 7.00 | 10.80 | | Yes | | High pH…
In a reactor where the volumetric flowrate is constant at 12 L/min, the conversion of A is 85% according to the reaction A → B. The entering reactor composition is 1.5 M. For the reaction at 25˚C, use k = 0.258/min. Calculate the reactor volume for a tubular reactor. A.) 88 L C.) 58…
For the liquid phase zero-order irreversible reaction A → B, the conversion of A in a CSTR is found to be 0.3 at a space velocity of 0.1/min. What will be the conversion for a PFR with a space velocity of 0.2/min? Assume that all the other operating conditions are the same for the CSTR and PFR.…
marks Window Help ggc.view.usg.edu Quizzes - Survey of Chemistry I wLab Section 18 Sprin... Your Personality Results - Big Five Personalily Test Maricola Herriander 0:57:53 remainin Question 4 (5 points) \( \checkmark \) Saved When iron is exposed to air and moisture, it begins to change…
A few different types of electromagnetic radiation are listed in the table below. Complete the table by ordering these types of radiation by increasing frequency, wavelength, and energy per photon. For example, select " 1 " in the second column for the type of radiation with the lowest…
A rew different types of electromagnetic radiation are listed in the table below. Complete the table by ordering these types of radiation by increasing frequency, wavelength, and energy per photon. For example, select " 1 " In the second column for the type of radiation with the lowest…
List all possible values of the angular momentum quantum number \( l \) for an electron in the \( M(n=3) \) shell of an atom. \[ l= \] \( \square \) \( \square, \square, \ldots \)
Here are sketches of four electron orbitals: A B C D \begin{tabular}{|l|c|} \hline Are any of them s orbitals? & \begin{tabular}{c} yes \\ no \end{tabular} \\ \hline List the \( s \) orbitals, if any. & \( \square \) \\ \hline Are any of them \( p \) orbitals? & \begin{tabular}{l} yes…
Fill in the multiple blanks for the reactions of organometallic complexes cycle below:
Here are sketches of four electron orbitals: A B C D \begin{tabular}{|l|c|} \hline Are any of them s orbitals? & \begin{tabular}{c} yes \\ no \end{tabular} \\ \hline List the \( s \) orbitals, if any. & \( \square \) \\ \hline Are any of them \( p \) orbitals? & \begin{tabular}{c} yes…
Complete the table below by filling in the principal quantum number \( n \) and angular momentum quantum number / for each electron subshell listed. \begin{tabular}{|c|c|c|} \hline subshell & \begin{tabular}{c} principal \\ quantum number \( \boldsymbol{n} \) \end{tabular} & \begin{tabular}{c}…
Q.3 provides you with an opportunity to apply your understanding of percentage uncertainty in relation to precision in volumetric apparatus. You are given a basic method and accompanying apparatus (all of which have a volume capacity of 10cm3). For part a) you are advised to calculate the…
please help me to answer all the questions
Nitric oxide (NO) can be formed from nitrogen, hydrogen and oxygen in two steps. In the first step, nitrogen and hydrogen react to form ammonia: \[ \mathrm{N}_{2}(g)+3 \mathrm{H}_{2}(g) \rightarrow 2 \mathrm{NH}_{3}(g) \quad \Delta H=-92 . \mathrm{kJ} \] In the second step, ammonia and oxygen…
can you help me to find out the measurements for all the answer should be in cm squared
ALEKS - Angmaya Lama - Acids Predict the reactants of this che N. Try Ace AI STEM Tutor by Numi Acids, Bases \& Salts Homework 5 Question 3 of 12 ( \( \mathbf{1 . 8} \) points) I Question Attempt: 1 of Unlimited 1 \( \times 2 \) 3 4 5 6 7 8 9 Example ? SAMPLE QUESTION Each row of the table…
Consider a parallel-plate capacitor having an area of \( 6.45 \times 10^{-4} \mathrm{~m}^{2}\left(1 \mathrm{in}^{2}\right) \) and a plate separation of \( 2 \times 10^{-3} \mathrm{~m}(0.08 \mathrm{in} \).) across which a potential of 10 V is applied. If a material having a dielectric constant…
A current of 1.7 mA flows into a \( 16 \mu \mathrm{~F} \) capacitor for 1.5 seconds. What is the potential difference gained and how much energy is stored?
SUBJECT: CHEMISTRY CLASS-XII Paper Date: 27-02-2025 TOTAL MARKS: 60 Time: 02 HOURS 40 MINUTES SECTION - B ( 40 Marks) NOTE: ANSWER ANY EIGHT (8) OF THE FOLLOWING QUESTIONS, ALL QUESTIONS CARRY EQUAL MARK MARKS. Q. NO. 01 Write down basic rules for IUPAC naming of organic compound. Q. NO. 02…
Based on the above circuit image, if \( \mathrm{R}=740 \mathrm{k} \Omega \), \( \mathrm{C}=2 \mu \mathrm{~F} \) and a constant voltage source \( =12 \mathrm{~V} \), how much current flows after 3 seconds the switch is closed? During that time, how much energy is dissipated by the resistance and…
12. Which of the following is NOT true for the halogens? (A) they are nonmetals (B) the electronic configuration of their outermost electrons is \( n s^{2} n p^{6} \) (C) their compounds with metals are generally ionic in nature (D) elemental halogens exist as diatomic molecules
CHEM2036A Lab Activity b) The mercury in a 0.7152 g sample was precipitated with an excess of paraperiodic acid. The reaction equation is as follows: \[ \begin{array}{c} 5 \mathrm{Hg}^{2+}+2 \mathrm{H}_{5} \mathrm{IO}_{6} \rightarrow \mathrm{Hg}_{5}\left(\mathrm{IO}_{6}\right)_{2}+10…
Food rots about 40 times more rapidly at \( 25^{\circ} \mathrm{C} \) than when stored at \( 4^{\circ} \mathrm{C} \). Estimate the overall activation energy for the process responsible for this process.
1 mol of alkane ( \( x \) ) produce \( \mathbf{2 2 0} \mathrm{g} \) of \( \mathrm{CO}_{2} \) when it is burnt Then the molecular formula of \( (x) \) is \( \qquad \) (Quiz 15 L5 Ch5) [ \( C=12, H=1, O=16 \) ] a) \( \mathrm{C}_{3} \mathrm{H}_{8} \) b) \( \mathrm{C}_{4} \mathrm{H}_{10} \) c) \(…
For the reaction \( \mathrm{A}+\mathrm{B} \rightarrow \mathrm{C} \), the rate coefficient at \( 225^{\circ} \mathrm{C} \) is \( 5.0 \times 10^{-3} \mathrm{~L} \mathrm{~mol}^{-1} \mathrm{~s}^{-1} \) and the rate coefficient at \( 442{ }^{\circ} \mathrm{C} \) is \( 1.2 \times 10^{-1} \mathrm{~L}…
The reaction \( 2 \mathrm{~N}_{2} \mathrm{O} 5(g) \rightarrow 4 \mathrm{NO}_{2}(g)+\mathrm{O}_{2}(g) \) was investigated. The following data were collected. \begin{tabular}{|c|c|} \hline Time \( / \mathrm{min} \) & {\( \left[\mathrm{N}_{2} \mathrm{O}_{5}\right] / \mathrm{mol} \mathrm{L}^{-1}…
An archaeological sample has \( 72 \% \) of \( { }^{14} \mathrm{C} \) found in equivalent living sample. Given that for \( { }^{14} \mathrm{C} \) decay, \( t / 2=5730 \) yr for \( { }^{14} \mathrm{C} \) decay, how old is the sample?
The molar concentration of ethanol in the blood was found to decrease from \( 250.0 \mathrm{mmol} \mathrm{L}^{-1} \) to \( 45.0 \mathrm{mmol} \mathrm{L}^{-1} \) in \( 1.32 \times 10^{4} \mathrm{~s} \), via alcohol dehydrogenase catalysed oxidation. The reaction is first-order. What is the rate…
The ball and stick models below represent three compounds with the same molecular formula, \( \mathrm{C}_{4} \mathrm{H}_{8} \mathrm{O}_{2} \). 11. Which compound ( s ) can form intermolecular H bonds? A: compound A C. compounds B \& C B. compound B D. compounds A \& B 12. Which has the highest…
stemlearn.s Dashboard My courses SUNLearn SocSciLearn FMHSL The correct answer is: 21.1 Correct Marks for this submission: 4.0/4.0. 6 out of If \( 5.63 \mathrm{~g} \mathrm{Fe}\left(\mathrm{NO}_{3}\right)_{3} \) is dissolved in enough water to make exactly 438.3 mL of solution, what is the…
12. Balanced chemical equations contain important information about the amount of reactants required to produce given products. These amounts are represented by \( \qquad \)
7 The formation of \( \mathrm{N}_{2} \mathrm{O}_{2} \) from NO was investigated. At one point in the experiment, it was found that that NO was consumed at \( 1.5 \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1} \). What is the rate of reaction at that point in the reaction? Justify your…
6 For any arbitrary rate law, Rate \( =k[\mathrm{~A}]^{\mathrm{n}} \) determine the units of \( k \), given that the rate has units of \( \mathrm{mol} \mathrm{L}^{-1} \mathrm{~s}^{-1} \) and \( [\mathrm{A}] \) is given in \( \mathrm{mol} \mathrm{L}^{-1} \).
d. Classify each of the following as Bronstead-Lowry acid, base or both: i. \( \mathrm{NH}_{4}^{+} \) [1] 2.2. \( \mathrm{HPO}_{4}^{2-} \) [1] 2i2i. \( \mathrm{CO}_{3}^{2-} \) [1]
146. Which of the listed aqueous solutions has the highest vapor pressure at a given temperature? (A) \( 0.01 \mathrm{M} \mathrm{KNO}_{3} \), (B) 0.1 M NaBr , (C) 1 M KCl , (D) \( 1 \mathrm{M} \mathrm{CaCl}_{2} \).
132. Solution \( A \) is with \( p H=12 \), and solution \( B- \) with \( p H=9 \). In solution \( A \) the concentration of the \( \mathrm{OH}^{-} \)ions \( \left(\left[\mathrm{OH}^{-}\right]_{A}\right) \) is: (A) 1000 times lower than \( \left[\mathrm{OH}^{-}\right]_{\mathrm{B}} \), (B) 1000…
a) Draw a reaction mechanism with curly arrows (arcuate intestine mechanism) that explains the formation of the product. The reaction takes place in several stages. Draw all the relevant arcs, free electron pairs and formal arcs in the diagram. (b) The product is formed as a mixture of…
A 5.00 L tank at \( 20.1^{\circ} \mathrm{C} \) is filled with 4.29 g of dinitrogen difluoride gas and 12.3 g of chlorine pentafluoride gas. You can assume both gases behave as ideal gases under these conditions. Calculate the mole fraction and partial pressure of each gas, and the total…
Four samples of the same unknown gas \( G \) are listed in the table below. Rank these samples in increasing order of ideality. That is, select 1 next to the sample of \( G \) that will behave least like an ideal gas, and select 4 next to the sample of \( G \) that will behave most like an…
Rank the samples of gas described in the table below in order of increasing average speed of the atoms or molecules in them. That is, select " 1 " next to the sample in which the atoms or molecules have the slowest average speed. Select " 2 " next to the sample in which the atoms or molecules…
\begin{tabular}{|l|l|l|} \hline Tube & Mass of \( \mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O} \) & \multicolumn{1}{|c|}{ Time to Dissolve (s) } \\ \hline A-Agitated solution & & 25 s \\ \hline B - Non-agitated solution & & 300 s \\ \hline \end{tabular} Question 36 Not yet…
Dzl. Grades - 25.SP.C Mail - Zendlovitz, Replacement Stif www-awu.aleks.com/alekscgi/x/lsl.exe/10_u-lgNsikr.... Acids and Bases Calculating the pH of a weak acid solution The acid dissociation constant \( K_{a} \) of trimethylacetic acid \( \left(\mathrm{HC}\left(\mathrm{CH}_{3}\right)_{3}…
Aktiv Learning Question 10.d of 10 Submit Consider the hypothetical thermochemical equation \[ 3 \mathrm{~A}+\mathrm{B} \rightarrow 2 \mathrm{C} \] for which \( \Delta \mathrm{H}=65.5 \mathrm{~kJ} / \mathrm{mol} \). What would \( \Delta \mathrm{H} \), in \( \mathrm{kJ} / \mathrm{mol} \), be…
The dissociation of molecular iodine into iodine atoms is represented as I? (g) ? 2 I (g) At 1000.0 K, the equilibrium constant Kc for the reaction is 3.80 × 10??. Suppose you start with 0.0455 mol of I? in a 2.34 L flask at 1000.0 K. What are the concentrations of the gases at…
Consider the equilibrium PCl3(g) + Cl2(g) ? PCl5(g) ?H < 0 What would be the effect on the position of equilibrium of increasing the total pressure on the system by decreasing its volume? adding PCl5(g) to the reaction mixture? decreasing the temperature at constant volume?
Suppose a 500. mL flask is filled with 2.0 mol of CO, 1.5 mol of CO2 and 0.40 mol of H2. This reaction becomes possible: CO(g) + H2O(g) ? CO2(g) + H2(g) Complete the table below, so that it lists the initial molarity of each compound, the change in molarity of each compound due to the…
, 13 Which substances are each other's constitutional (structural) isomers? ed out of question Select one: formic acid and acetic acid ethanol and dimethyl ether acetic acid and acetone acetone and ethtanol dimethyl ether and formic acid ious page Next page
Using the micrograph image and the ruler scale to determine the length of the mitochondrion in nanometres (nm). Similar to Q.2 part a) you need to measure the length of the mitochondria in cm and use the value for one mm division to determine the length in nm. This will give you the actual…
of Q.2 you need to use the eye-piece lens magnification, and objective lens magnification shown to the right of the cell image to calculate the magnification of the image. Part b) again requires you to measure the size of a cell (this time a white blood cell) from the ruler scale given but this…
Q.1 part a i) requires you to measure the image size if the red blood cell (using the ruler scale given) and you will need to then convert the measurement from cm to micrometres (µm) in preparation for part ii). With part ii) you need to use the magnification triangular equation to calculate…
Suppose you are titrating vinegar, which is an acetic acid solution, of unknown strength with sodium hydroxide according to the equation HC2H3O2 + NaOH ? H2O + NaC2H3O2 If you require 32.17 mL of 0.116 M NaOH solution to titrate 10.0 mL of HC2H3O2 solution, what is the concentration of acetic…
The hydrolysis of methyl acetate in an autocatalytic reaction and is first order with respect to both methyl acetate and acetic acid. The reaction is elementary, bimolecular and can be considered irreversible at constant volume for design purposes. The following data are given: Initial…
Analysis of pH measurements of solutions after the addition of HCl | | Initial pH | pH after 5 drops HCl | pH after 10 drops HCl | Total pH change | Buffer (Y or N) | |---|---|---|---|---|---| | H?O | 7.00 | 2.00 | 1.10 | | Choose... Yes | | 0.1 M NaCl | 7.00 | 2.00 | 0.70 | | Choose... Yes…
Calculations for the titration of vinegar with sodium hyroxide | | Trial 1 | Trial 2 | Trial 3 | | :--- | :--- | :--- | :--- | | Volume of vinegar (mL) | 5.00 | 5.00 | 5.00 | | Final volume NaOH (mL) | 46.15 | 46.61 | 45.82 | | Inital volume NaOH (mL) | 0.00 | 0.25 | 0.00 | | Volume NaOH used…
For the reaction that can be written as A→B→C, the value of k1 is 5.65x10-3 /min and the time necessary to reach the maximum concentration of B is 26 min. What is the value of k2? A.) 0.3459 C.) 0.1246 B.) 0.7763 D.) 0.1231
Analysis of pH measurements of solutions after the addition of NaOH | | Initial pH | pH after 5 drops NaOH | pH after 10 drops NaOH | Total pH change | Buffer (Y or N) | |---|---|---|---|---|---| | H?O | 7.00 | 7.00 | 10.30 | | Yes | | 0.1 M NaCl | 11.90 | 7.00 | 10.80 | | Yes | | High pH…
In a reactor where the volumetric flowrate is constant at 12 L/min, the conversion of A is 85% according to the reaction A → B. The entering reactor composition is 1.5 M. For the reaction at 25˚C, use k = 0.258/min. Calculate the reactor volume for a tubular reactor. A.) 88 L C.) 58…
Q.3 provides you with an opportunity to apply your understanding of percentage uncertainty in relation to precision in volumetric apparatus. You are given a basic method and accompanying apparatus (all of which have a volume capacity of 10cm3). For part a) you are advised to calculate the…
please help me to answer all the questions
can you help me to find out the measurements for all the answer should be in cm squared
The dissociation of molecular iodine into iodine atoms is represented as I? (g) ? 2 I (g) At 1000.0 K, the equilibrium constant Kc for the reaction is 3.80 × 10??. Suppose you start with 0.0455 mol of I? in a 2.34 L flask at 1000.0 K. What are the concentrations of the gases at…
Consider the equilibrium PCl3(g) + Cl2(g) ? PCl5(g) ?H < 0 What would be the effect on the position of equilibrium of increasing the total pressure on the system by decreasing its volume? adding PCl5(g) to the reaction mixture? decreasing the temperature at constant volume?
Suppose a 500. mL flask is filled with 2.0 mol of CO, 1.5 mol of CO2 and 0.40 mol of H2. This reaction becomes possible: CO(g) + H2O(g) ? CO2(g) + H2(g) Complete the table below, so that it lists the initial molarity of each compound, the change in molarity of each compound due to the…