CnH2n+2
M = n * 12 + 2n+2
= 14 n + 2 = 72
14n = 70
n = 5 -> C5H12 pentan
n - pentan : CH3 - CH2 - CH2 - CH2 - CH3
2 - metilbutan : CH3 - CH - CH2 - CH3
|
CH3
2. 2 dimetilpropan:
H3C - C - CH3
