Jawabanmu

2014-06-11T19:19:36+07:00
Butane: 
CH3-CH2-CH2-CH3 
1-methylpropane: 
(CH3-)CH2-CH2-CH3 
ethylethane: 
(CH3-CH2-)CH2-CH3 
1,2-dimethylethane: 
(CH3-)CH2-CH2(-CH3) 
2014-06-11T19:25:29+07:00
Isomer 
a. butana
b. 2-metil-propana