Midterm_2_140A_Fall06_BLANK_Ternansky

Midterm_2_140A_Fall06_BLANK_Ternansky - Chemistry 140A...

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Unformatted text preview: Chemistry 140A Fall, 2006 Second Midterm Exam-250 points 11/14/06 DO NOT OPEN THIS EXAM UNTIL INSTRUCTED TO DO SO.....FILL OUT THE FOLLOWING INFORMATION NOW : . YOUR NAME (Print): ____________________________________ PID: __________________________________________________ SIGNATURE: __________________________________________ ID checker initials: ______________________________________ If you wish to have any answers considered for a re-grade, your exam must be completed in INK .also, no ALTERED answers will be considered for re-grade. 1. (42 points) For the following molecules, assign R or S to each of the numbered atoms. If the atom is not chiral, write NC in the space. Next, indicate whether the molecule is chiral, achiral or meso by circling the appropriate designation. Note that meso is a special case of achiral and must be designated where appropriate. H O O H N H OH H 3 C H HO 2 C CO 2 H HO OH O H H Br Br Br Cl Cl H OH H H CH 3 H 3 C CH 3 CH 3 H Et CH 3 Br H 1 2 3 4 chiral achiral meso 1: 2: 3: 4: 1 2 3 1 2 3 4 1 2 3 4 5 chiral achiral meso chiral achiral meso 1: 2: 3: 4: chiral achiral meso 1: 2: 3: 4: 5: 1 2 chiral achiral meso 1: 2: 1 2 chiral achiral meso 1: 2: 1 2 3 1 2 chiral achiral meso 1: 2: chiral achiral meso...
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Midterm_2_140A_Fall06_BLANK_Ternansky - Chemistry 140A...

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