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CEM_143_quiz_3_key - CEM 143 QUIZ 3 11 February 2008 Name...

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CEM 143 QUIZ 3 11 February 2008 Name ____________________________________ Section _______ 1. (4 pts.) Provide names or structures as needed. Cl Cl 1,2-dichlorobenzene or o-dichlorobenzene toluene 2. (6 pts.) Of the pairs of molecules shown below: Which pair(s) are enantiomers? ____C________ Which pair(s) are identical? ____A, B_______ Circle the structure(s) that are meso compound(s). A B C D Br H H Br H H NH 2 CH 3 H CH 3 NH 2 H OH H OH H OH H H OH H 3 C NH 2 CH 3 H CH 3 H 2 N CH 3 H CH 3
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3. (6 pts.) There are 4 good resonance structures that can be drawn for the
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