I need help with #4 and #9 please.

Chem 270 Worksheet 3 Winter 2 1. (5 pts) Draw five constitutional isomers with molecular formula C&H hexane (2-methylpentane z CHCHCH CH CH CH3 2. (2 pts) Find and name the parent hydrocarbon in this structure CH.CH ,, CH, CHCHCHS nonane 3. (2 pts) How many substituents are present in the hydrocarbon above? two 4. (3 pts) Name the substituents and give them appropriate position numbers 5. (2 pts) What is the systematic name of this compound? 6. (4 pts) provide the systematic name for each of the following: propyt 3-methyl-4-propyl heptane w OG boty ethyl 0 6-ethyl-2,3-dimethyl nonane 7. (4 pts) Provide a systematic name for each of these compounds 1- isopropylcyclobutane 1-butyl cycloheptane Chem 270 Worksheet 3 Winter 202 8. (3 pts) Provide systematic names for the following structures ethyl isopropyl ethyl methal 1- ethyl-3-isopropylcyclopentane "1- ethyl-2,5-dimethylcyclohexane a 1,2,3-trimethylcyclopropane 9. (6 pts) Name each alkyl halide and classify it as primary, secondary or tertiary Br 32 10. (6 pts) Name each alcohol and classify it as primary, secondary or tertiary butan-1-ol ,,,, 1-butanol 2-methylbutan-2-ol 2 4 OH OH 2-methyl-2-butanol cyclohanol primary tertiary secondary 11. (6 pts) Name each amine and classify it as primary, secondary or tertiary CHCH_CH2NHCHN-methylpropar-l-amine e secondary cyclopentan amine primary -NH2 'N,N-dimethylpropan-2-amine tertiary