4.Which of the following compounds has the highest heat of combustion per CH cyclohexane B) 5.What is the correct IUPAC name for the following molecule: A)1-ethyl-2-methylhexane D)1-ethyl-2-methylcyclohexane 2-ethyl-1-methylcycloheptane Ans: Dethyl-5-methyleyeloe E)1-methyloctane CH(CH3) 3) 9 aa H.C D) CH(CH3). A CH(CH3) Ans:E Page2 Page 2 4. Which of the following compounds has the highest heat of combustion per CH2 group? A) cyclopropane D) cyclohexane B) cyclobutane E) All have equal ΔHcombustion. C) cyclopentane Ans: A 5. What is the correct IUPAC name for the following molecule: A) 1-ethyl-2-methylhexane D) 1-ethyl-2-methylcyclohexane B) 2-ethyl-1-methylcycloheptane E) 1-methyloctane C) 4-ethyl-5-methylcyclohexane Ans: D 6. Which would be the most stable conformation of trans-1-methyl-3-isopropylcyclohexane? A) CH(CH3) H 2 H3C H B) CH(CH3) CH 2 3 H H C) CH(CH3)2 H H3C H D) CH(CH3)2 H CH3 H E) CH H 3 H CH(CH3)2 Ans: E