15. Identify whether the following pairs of structures are: (A) Same co (B) Constitutional isomers, (C) Cis-trans isomers or (D) Not isomers а. () CH̟CH,CHCH,CH, and CH,CH,CHCH,CH,CH, (ii) ČH̟CH, CH, b. (i) Br (ii) Br C=C Br and H (i) H (ii) Br H. С. Br H Br. H and H Br Br H.

Using solid and dashed wedges, draw the structure of (1S, 2S, 4R, 5R)-1,5-dibromo-2,4- dichlorocyclohexane, then draw the most stable conformer.

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Which of the following molecules is chiral? О H3C H3C H3C Н І. I H CH3 CH3 CH3 H

Which of the following molecules has conformational isomers? View Available Hint(s)for Part B Hint 1for Part B. How to approach the problem Hint 2for Part B. Determine the bonding of the compounds Which of the following molecules has conformational isomers? CHCH CH2CH2 CH3CH2CH2CH3 CH2CCCH2

Provide R/S configurations to all chiral centers

Given below are condensed structural formulas derived from the same molecular formula (C,H14). Identify which pair represents structural isomers, that is, different molecules. CH3 CH3 CH, CH3 CH, CH, CH-CH3 CH, CH-CH-CH3 CH3 CH, CH-CH,-CH2 CH3 CH, CH-CH CH, CH3 CH3 A and C O Cand D O Band D O D and A