Answers: 1 to 9
 
# name formula
1 2-chlorohex-3-ene CH3CHClCH=CHCH2CH3
2 pent-2-ene CH3CH=CHCH2CH3
3 oct-4-yne CH3CH2CH2C≡CCH2CH2CH3
4 6-bromohept-2-one CH3CHBrCH2CH2CH2COCH3
5 4-aminobutanal CH2NH2CH2CH2CHO
6 pentyl propanoate CH3CH2COOCH2CH2CH2CH2CH3
7 2-propyl-4-hydroxyhexanoic acid CH3CHOHCH2CH2CH(C3H7)COOH
8 nonanamide CH3CH2CH2CH2CH2CH2CH2CH2CONH2
9 N-ethylmethanamide HCONHC2H5