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Midterm 1-key-2005 - NAME STUDENT ID NUMBER LAB TIME TA...

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NAME: STUDENT ID NUMBER LAB TIME TA NAME CHEMISTRY 112A First Midterm February 2, 2005 I. --------------------- (10) II.--------------------- (6) III.-------------------- (12) IV--------------------- (6) V. --------------------- (10) VI. -------------------- (10) VII-------------------- (10) VIII-------------------- (9) IX-------------------- (12) X-------------------- (15) Bonus ---------------- (5) Total -------------------(100)
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I) a) Name the compound below. b) Draw a skeletal structure for this compound CH 3 CH 2 C CH 2 CH 3 CH 2 CH 3 CH CH 2 CH 3 CH 3 3-ethyl-3,5-dimethylheptane II) Draw the structure of the cis -2-hexene. III) a) Indicate the hybridization of all of the carbons. b) Indicate the number of hydrogen(s) on each carbon. 2 1 6 5 7 4 3 9 8 1 2 3 4 5 6 7 8 9 carbon number hybridization number of H sp 2 sp 2 sp 2 sp 2 sp 2 sp 2 sp sp sp 3 0 0 1 1 1 1 0 1 3 c) Most of the atoms of this molecule are in the same plane. Which are the exceptions. H atoms on carbon # 9
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IV) Indicate the formal charges for the following molecule. H C N O V) Circle the highest priority group on each carbon. Are the following molecules E or Z? F C Cl C O CH 3 O CH 2 CH 3 C C C C O CH 3 C O CH 3 N N CH 3 CH 3 H 3 C CH 3 E Z VI) a) Draw as many resonance structures as you can for the following compound.
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