1) 3-ethyl-5-methyloct-1-ene:
CH3-CH2-CH=CH-CH2-CH(CH3)-CH2-CH3
2) 2,3-dimethylpentane:
CH3-CH(CH3)-CH(CH3)-CH2-CH3
1) 3-ethyl-5-methyloct-1-ene:
CH3-CH2-CH=CH-CH2-CH(CH3)-CH2-CH3
2) 2,3-dimethylpentane:
CH3-CH(CH3)-CH(CH3)-CH2-CH3