7.Rotation around the carbon- arbon bond of the molecule depicted by the following Newman projection requires how much energy A)0kcal/mol B)3 kcal/mol C)6 keal/mol D)9 kcal/mol E) 8.What is the correct IUPAC name for the following molecule? A) 1,1,1,4-tetramethylhexane D)3.6.6.6-tetramethylhexane 4-ethyl-1,1,1-trimethylpentane E)2,2,5-trimethylheptane -ethyl-2,2-dimethylhexane Ans: 9.The following represents what functional group? R7O-R A)ester B)ether C)alcohol D)thiol E)ketone Ans:B 10.The following represents what functional group? A)alcohol B)aldehyde C)carboxylic acid D)amide E) Page3 Page 3 7. Rotation around the carbon-carbon bond of the molecule depicted by the following Newman projection requires how much energy? H H H H H H A) 0 kcal/mol B) 3 kcal/mol C) 6 kcal/mol D) 9 kcal/mol E) 15 kcal/mol Ans: B 8. What is the correct IUPAC name for the following molecule? A) 1,1,1,4-tetramethylhexane D) 3,6,6,6-tetramethylhexane B) 4-ethyl-1,1,1-trimethylpentane E) 2,2,5-trimethylheptane C) 5-ethyl-2,2-dimethylhexane Ans: E 9. The following represents what functional group? R R O A) ester B) ether C) alcohol D) thiol E) ketone Ans: B 10. The following represents what functional group? R H O A) alcohol B) aldehyde C) carboxylic acid D) amide E) ketone Ans: B