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key 1 - CHEMISTRY 2211 EXAM 1 Be sure to read each question...

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CHEMISTRY 2211 EXAM 1 September 16, 2009 H .. O . . .. CH 3 CH N O O Be sure to read each question carefully. Partial credit will be assigned where appropriate. Only answers written in the associated boxes will be graded . Relax and good luck!! 1. (10 points) D raw 5 isomeric structures with the molecular formula C 5 H 10 that contain only sp 3 -hybridized carbon atoms. Underline the structures that are stereoisomers. SCORE 1. ____________ 2. ____________ 3. ____________ 4. ____________ 5. ____________ 6. ____________ 7. ____________ 8. ____________ 9. ____________ _____________ TOTAL NAME last, first 810# H 3 C H 3 C H 3 C ` H 3 C CH 3 H 3 C CH 3 CH 2 CH 3 2. (12 points) Draw resonance structures for the following species: H .. O . . .. H .. O . . .. H .. O . . .. H .. O . . .. N O O H 3 CCH CH 3 CH N O O
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