Write IUPAC names for the following organic compounds?

Question

1.) CH3CH2CH2CH2CH2CH=CHCH2CH3

2.) CH2---CH2---CH3

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CH3---CH2---C---CH3

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CH3

CH3 CH3

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3.) CH3---CH---CH---CH---CH---C ≡ CH

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CH2---CH3 CH3

Answer 1

1) 3-nonene

2) 3,3-dimethylhexane

3) 5-ethyl-5-isopropyl-3,4-dimethyl-1-heptyne