Mt1key - Chem 140A Midterm I Answer Key Q1(16 points Q2(14 points Q3(12 points Q4(17 points Q5(12 points Q6(12 points Q7(17 points Total(100 points

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Chem 140A Midterm I Answer Key October 15, 2009 Q1_________(16 points) Q2_________(14 points) Q3_________(12 points) Q4_________(17 points) Q5_________(12 points) Q6_________(12 points) Q7_________(17 points) Total_________(100 points) If you write the exam in pencil or erasable pen, you give up your right to any kind of regrade. Name_______________________ PID_________________________
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1. Functional Groups (16 points). Please circle the functional groups present in the following molecules and give their names.
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2. Conformational Isomerism (14 points). Draw the following molecules in Newman projections. Indicate whether they are staggered or eclipsed forms. A. The most stable conformational isomer of 2,3-dimethylbutane No eclipsing 2 methyl-methyl gauche interactions b. The least stable conformational isomer of 2,3-dimethylbutane Maximum eclipsing of bonds 2 methyl-methyl eclipsing interactions
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3. Orbital Description (12 Points). Draw the orbital diagram/structure of the molecule shown below,
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This note was uploaded on 01/25/2010 for the course CHEM chem 140A taught by Professor Dr.yang during the Spring '07 term at UCSD.

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Mt1key - Chem 140A Midterm I Answer Key Q1(16 points Q2(14 points Q3(12 points Q4(17 points Q5(12 points Q6(12 points Q7(17 points Total(100 points

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