Please Answer the questions.

2) Which of the following pairs of compounds are constitutional isomers? A) and CH=CHCH, B) .cl Br and x C) and ) " and E) None of these pairs are constitutional isomers 6) What is the major organic product of the following reaction of one mole cyclohexane with one mole of Br2 in the presence of light or heat? + Br2 + heat or light ? A) B) Br D) Br Br Br Br Br Br E) Br & 7) What are the coefficients for the balanced combustion reaction of butane with sufficient oxygen as shown below? CH3CH2CH2CH3 + O2 + ? A) 1,6.5,4,5 B) 2,13,8,10 C) 1,2,1,2 D) 13,2,10,8 E) 2,6,4,6 Br 4) Name the following structure using IUPAC rules. A) 1-bromo-4,3-dimethylcyclohexane B) 5-bromo-1,2-dimethylcyclohexane C) 4-bromo-1,2-dimethylcyclohexane D) 1-bromo-4,5-dimethylcyclohexane E) 1,2-dimethyl-4-bromocyclohexane 10) Which name represents a valid IUPAC name for an alkane? A) 1,4-diethylheptane B) 4,4-diethyl-2,3,4-trimethylpentane C) 4,4-diethyl-2,3,4-trimethylcycloheptane D) 4,4-diethyl-2,3-dimethylheptane E) More than one of the names is a valid IUPAC name for an alkane. 5) Which structure depicts an alkane of molecular formula C6H12 that has two 1 carbons and two 3 carbons? A) HC -CH3 B) CH3CH2CH2CH2CH2CH3 C) -CH_CH; D ) H 1 H-CH H H H-C -C C H H H H-CH H E) E