M butan= 58g/mol
n,butan= 29g/58g/mol= 0,5mol
nC tertiar= 4,8g/12g/mol= 0,4mol
0,4MOL<---------------------0,4MOL
ec1. CH3-CH2-CH2-CH3⇄CH3-CH(CH3)-CH3
0,1MOL 0,1MOL
ec.2 CH3-CH2-CH2-CH3-------------> NETRANSFORMAT
0,5mol total.......0,1mol butan netransformat
100mol...................x= ...................calculeaza !!!!