Numerade

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1.(s) For each of the following pairs of reactants, (i) draw the predicted product according to the mechanism written below the reaction arrow. Your answer must account for stereochemistry. If a racemic mixture is expected, indicate this (you can write "racemic", "(+,-)" or "(±)"). If a mixture of diastereomers is expected, draw each expected diastereomer. If you can predict the major diastereomer under the given conditions, indicate this by writing "major" under that diastereomer. (ii) Draw a complete curved arrow mechanism that produces your (major) product. (a) (b) Cl + NaCN SN2 Br + KOH SN2 علم (c) + NH3 (2 molar equivalents) SN1 (d) Br + NaOAc* SN1 Θ *note: Ac = acetyl; OA OAc is the acetate ion ( (e) + NaOAc E1 (f) CI "гоо + KOC(CH3)3 E2 )

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Group members respond more negatively to staged, scripted communication as it suggests manipulation on the part of the group leader. true or false

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Sterols can be differentiated from steroids with a a hydroxy group at position three of ring B a hydroxy group at position three of ring A CH3 group at position 5 of ring C CH3 group at position 2 of ring B

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you need to prepare 2 liters of a 1.75 M phosphate buffer at ph 7.8 . how would you do it using the relevant sodium salts of phosphate

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A spaceship traveling 100,000 m/s in deep space, not near any other planets or stars, runs out of fuel during its trip. Which of the following will happen? Multiple choice question. The spaceship will immediately come to rest. The spaceship will continue traveling at 100,000 m/s. The spaceship will slowly come to rest.

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Tammy has gone into pre-term labor. She is given cortisone. Why might she be given cortisone? A. to slow down her labor contractions and prevent premature delivery of the baby B. to stimulate affectionate behavior in the mom in the event the baby is born early C. to assist in increasing surfactant production in baby's lungs should the baby be born prematurely D. to increase the baby's metabolism, which encourages rapid maturation of the heart and lungs E. to stimulate a fight or flight reaction in the mom to slow down her labor F. to stimulate early milk production in the mammary glands should the baby be born prematurely

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Question 22 Absolute zero temperature: Has not yet been attained, but research is underway to attain it. Has already been attained. Cannot be attained. 1 pts

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For the following true statement, tell whether its converse, inverse, and contrapositive are true or false. If Jane is in 10th grade, then she is in high school. Converse: If Jane is in high school, then she is in 10th grade. Inverse: If Jane is not in 10th grade, then she is not in high school. Contrapositive: If Jane is not in high school then she is not in 10th grade.

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P7.30 An RLC network is shown in Figure P7.30. The nominal values (normalized) of the network elements are $L = C = 1$ and $R = 2.5$. Show that the root sensitivity of the two roots of the input impedance $Z(s)$ to a change in $R$ is different by a factor of 4. +o R $Z(s)$ L C

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A standard 25-HP electric motor operates at 1800-RPM. If the motor is connected to a pump in the configuration below. The left end of the shaft is the motor shaft and has a diameter $d_2 = 1.25\text{''}$. The right end of the shaft is the pump shaft and has a diameter $d_1 = .875\text{''}$ with a transitional root radius between the two diameters of $r = .05\text{''}$. The shaft is solid, COLD WORKED, stainless steel. Determine the torque carried by the shaft.

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taylor b.