1)CH4
w(C)=1*12/16=0.75
w(H)= 1-0.75=0.25
2)C2H6
w(C)=2*12/30=0.8
w(H)= 1-0.8=0.2
3)C3H8
w(C)=3*12/44 = 0.818
w(H) = 0.182
CH4<C2H6<C3H8
1)CH4
w(C)=1*12/16=0.75
w(H)= 1-0.75=0.25
2)C2H6
w(C)=2*12/30=0.8
w(H)= 1-0.8=0.2
3)C3H8
w(C)=3*12/44 = 0.818
w(H) = 0.182
CH4<C2H6<C3H8