Practice Exam Essay

Submitted By mlauth

Words: 510

Pages: 3

Open Document

Exam 3B 1. Assign the configurations of the chirality centers as defined be the arrows.

F
H
CH3

_________ OH
H3CH2C

____________

_________ HO
H3C

Cl

__________

CH3 OH H
H

C l

________

H3 C

H

H3 CH C
2 H2 C

CHO

__________ H

2. Which alkyl halide would react FASTEST by SN2 Reaction. Circle the correct Br answer. Br

Br
Ph

Br

Ph

Br

3. State whether the structure in each pair are enantiomers (E), diastereomers (D), or the same structure (Same). Designations may be used more than once or not at all. a. Cl
H
H
HO
OH
Br

I
H
OH

and

__________

I

Br
Cl

H

b.

OH

F

and

__________

F

c. and d.

Br
Br

F
H

Br
CH3

H

__________

Br

and

__________

H
F

H

H

F

Exam 3B

Br

Br

and

________________

________________

OHC

H

and

H

CH3

OH

NH2

H3C

H3C

f.

NH2

H

CH3

OH

H

CHO

e.

4. Complete the following substitution reactions by either writing the major organic product(s) formed, the missing starting material, or the missing reagent(s) as indicated by the box. Be sure to show stereochemistry (wedge-‐ dash) structures to indicate the configuration at chirality centers. If a pair of enantiomers form, be sure to show both appropriately. a.

Na O
DMSO

b.

Br

I

Na O
DMSO

c.

CN

NaCN
DMF

d.

HBr
Heat

O
Br

H

H

Exam 3B 5. Optically pure (R)-isomer of bupropion (Wellbutrin) is used to assist in smoking cessation, for treating smoking and nicotine addiction, and for treating pain, including, but not limited to, chronic pain and neuropathetic pain, while avoiding adverse affects associated with racemic bupropion. It is also used as an atypical antidepressant. Circle the R enantiomer of bupropion.
O

O

HN

Cl

HN

Cl

6. Show the mechanisms for the following two reactions. Make sure you show all electron and correct pushing arrows. Circle the major product! OH a.

H2SO4
H2O

Heat

O
b.

Br
O

HOCH
O
3

+
+

Practice Essay for Exam

Practice Essay for Exam: “Northern Lights” is a fantasy novel, first in the Trilogy “His Dark Materials”, by Phillip Pullman, which is about a young curious and adventurous little girl with a smart daemon named Pantalaimon. She loves to hang out and do dangerous things with her peers in Jordan College. She is a young girl who wants to discover the mysteries about the other worlds that are visible through the northern lights. The novel deals with a number of issues: Lyra, the main character, wants…

Words 609 - Pages 3

Essay about Practice Exam A

MATH 34 EXAM II PRACTICE EXAM A 1. Suppose that in November 2007 you bought 10 shares of Google stock for $711.25 per share. Three years later you decide to sell the stock when it is trading at $597.45 per share. What compound annual rate does your capital gain or loss represent? 2. To raise capital for building a new store in Central Pennsylvania, Trader Joe’s issues 10-year $1000 bond, with a 7% coupon rate. If interest on the bond is paid quarterly, calculate the total interest that will be…

Words 1825 - Pages 8

Practice Exam 4 Essay

KIN 216 – PRACTICE EXAM 4 (120 POINTS) Computer-scored questions (Multiple Choice and T/F): Remember to fill in the bubbles underneath your name and PID, put the exam number (4) and the version letter (A,B,C,D) from the top of this page in the appropriate boxes, and SIGN THE SIGNATURE BOX. Double check your recorded answers, since only the computer sheets will count, NOT answers written in your test pages. TRUE/FALSE: Fill in the circle “a” for true and “b” for false. 1. Erythrocytes contain…

Words 1517 - Pages 7

Adv Practice Exam Essay

PRACTICE EXAM QUESTIONS Question 1 Discuss in detail three (3) advantages when advertising on television? Which organisations measure magazine circulation? Three advantages: Pervasiveness: Television advertising makes it possible to reach large audiences. Marketers selling products and services that appeal to broad target audiences find that TV lets them reach mass markets Cost-efficiency: Companies with widespread distribution and availability of their products and services use TV to reach…

Words 904 - Pages 4

Practice Exam Key #7 Essay

Homework 7 Practice Exam 7 Tuesday, November 27 1.) In some orchid species, flowers look and smell like a female wasp. Males will visit the flowers and try to copulate with them. In the process, they get dusted with pollen. What is the nature of this interaction? (competition, consumption, commensalism, parasitism, mutualism) Explain your logic. Key: Sample answer Parasitism--the wasp wastes time and energy copulating with the orchid, while the orchid gets pollinated. There is a fitness cost…

Words 972 - Pages 4

Essay on Practice Exam 1

Choose four (4) of the following questions and answer them in short essay format. All questions are worth equal marks. (12.5 marks each) QUESTION 1 (12.5 marks) Discuss the key factors in the international environment that managers of emerging global organisations look to as threats to their international operations. Provide examples as appropriate. International Environment is the management of business operations conducted in more than one country and usually outside of the organisations…

Words 1264 - Pages 6

Mgx9001 S2 Practice Exam Answers

MGX9001 S2 Practice Exam SECTION A – TRUE/FALSE QUESTIONS 1. Reflecting on a speaker’s message is part of active listening - T F 2. Attention, need, satisfaction, visualisation, and action are the five steps that make up Monroe’s Motivated Sequence - T F 3. A person who is well-liked by his/her peers has legitimate power - T F 4. Social loafing occurs when the presence of others in a group or team improves the performance of individual members - T F 5. According…

Words 1542 - Pages 7

Macro Economics Practice Exam Essay

Question 1 (Essay Worth 15 points) Exchange Rates | Year | U.S. Dollar | South Korean Won | Malaysian Ringgits | Indonesian Rupiahs | 2008 | 1 | 9,046 | 3.49 | 9,022 | 2009 | 1 | 9,046 | 3.78 | 9,087 | 2010 | 1 | 8,995 | 3.65 | 9,144 | a. Given the change in the value of the dollar between 2008 and 2009, as indicated in the table above, describe the effects this will have on United States tourism in each of these countries. b. Explain what impact the change in the value…

Words 2082 - Pages 9

Histo Practice Exam 1 Essay

1. Fixation 2. formaldehyde 3. glutaraldehyde 4. Dehydration 5. clearing 6. epoxy resins, paraffin 7. microtome 8. glass slide, wire grid 9. Hematoxylin, Eosin 10. Eosin 11. Hematoxylin 12. cationic/ + charged 13. acidophilia 14. anionic/ – charged 15. basophilia 16. RNA 17. pink, purple 18. False, it differs 19. insoluble molecules 20. small, organic solvents 21. Shrinkage 22. artificial spaces, molecules 23. artifacts 24. chemical composition 25. enzymes 26. antibodies…

Words 1255 - Pages 6

Practice exam Bio 121 Essay

Bio 121 Exam 2 Fall 2010 Name___________________________________ Date________________ 1) The advantage of light microscopy over electron microscopy is that A) light microscopy allows one to view dynamic processes in living cells. B) light microscopy provides for higher magnification than electron microscopy. C) light microscopy provides for higher resolving power than electron microscopy. D) A and B E) B and C 2) Which of the following correctly lists the order in which cellular components…

Words 2670 - Pages 11