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B) east.cengagenow.com Payment , Convert-N cement pa...20 Free Sh... HOME-m... Cengage Cengage Online t... Assignment #2 Extra Credit References] Arrange the following groups in order of decreasing priority that would allow you to determine E/Z, or R/S. Question 13 1 pt Question 14 a)-CHs b)-H c)-Br d)-COOH Question 15 1pt Question 16 Provide a string of letters (e.g. abed) as an answer with the highest priority listed first, lowest priority last: Question 17 1pt Question 18 1 pt Question 19 1pt 1 pt Question 21 1 pt Arrange the following groups in order of decreasing priority that would allow vou to determine E/Z, or R/S Question 20 a)-CH3 b)-H c)-Br d)-CH2CH

Explanation / Answer

Priority depends upon atomic mass of the four groups around a chiral center . The highest atomic mass is assigned priority #1, and the lowest atomic number is assigned priority #4.

ans 1

c) Br

d) COOH

a) CH3

b) H

ans 2

c) Br

d) COOH

a) CH2CH3

b) H

ans c

c) Br

d) COOH

a) CH2CH3

b) H

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