Exam_1_White - CEM251/Fall 2010/First Exam.(page 1) (12...

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CEM251/Fall 2010/ First Exam ..... (page 1) ( 12 total points ) 1. Draw the structure of each of the following molecules: 2,2,3-trimethylpentane a) 2 pts. cis -1- t - butyl-4-chlorocyclohexane (use wedge-dotted lines to show stereochemistry) b) 2 pts. 2. Give the IUPAC name for each of the following molecules: CH 2 CH CH 3 CH 3 2 pts. a) 2 pts. b) CH 3 CH 2 CH CHCH 3 CH 3 Br 3. Give the formal charge on the indicated atoms in the following structure: C CH 3 O N H CH 3 2 pts. 2 pts.
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CEM251/Fall 2010/ First Exam ..... (page 2) ( 12 total points ) Molecule X has 20 carbons, three ! bonds and one ring. How many hydrogens does X have? 4) 2 pts. The number of ! bonds in Y is? c) a) The number of Sp 3 carbons in Y is? b) 5) For the above molecule Y : The number of Sp 2 carbons in Y is? The number of Sp carbons in Y is? NCH 2 CH 3 d) Y CH 2 C C C O OH 2 pts. 2 pts. 2 pts. 2 pts. 6) How many of the six methyl groups in molecule A will occupy an equatorial position in A ʼ s more stable chair conformation?
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Exam_1_White - CEM251/Fall 2010/First Exam.(page 1) (12...

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