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Key 2 - CHM 2210 Fall 2010 LAST Name First*Wagener Quiz 2...

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Unformatted text preview: CHM 2210, Fall 2010 LAST Name, First *Wagener Quiz 2 ** Write all answers in provided boxes. UFID# l. (15pts) Show all the resonance structures for the following molecule. H H B H H H T H ><\ 5 /H h\ Cgl\ L/H \C-C/"\C??H:c: )c—c/ \ CH=C\ é...» /C :C . C“ t \ H rd) ‘1‘ / ’ >‘——‘.\‘\ U‘ H H H Hp, H V H H H H H H H H H H\ f" a H > \ . H H H H H 2. (15pts) The correct name for the compound shown below is: Write the correct letter in the box A. 2,2-dimethyl-4-ethyl hexane ‘ B. 4-ethyl-2,2-dimethyl hexane C. 3-ethyl-5,5-dimethyl hexane ~ - D. 4-ethyl-2,2-methyl hexane ' ‘ . 3. (15pts) True or False: the gauche conformation for n-butane is lower in energy than the anti conformation. Write T or F in the box 4. (15pts) True or False: Steric strain is the same thing as monobonded interaction strain. NON 0?. {A “-1) ED Write TorFin the box 5. (15pts) Draw a Newman projection of the lowest energy conformation for n-butane. CM 2 J H (1an or W \ /‘ u H $m93£rw CH 1 6. (15pts) Using line drawings Show? all the constitutional isomers for C5H12. 7. (10pts) The molecular formula for the following compound is Write the correct A. C5H12 letter in the box B. C10H22 ...
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