`d_(\frac{N_2}{H_2})=\frac{28}{2}=14`
`d_(\frac{CO}{H_2})=\frac{28}{2}=14`
`d_(\frac{CH_4}{H_2})=\frac{16}{2}=8`
`d_(\frac{C_2H_6}{H_2})=\frac{30}{2}=15`
c,
`d_(\frac{N_2}{O_2})=\frac{28}{32}=0,875`
`d_(\frac{CO}{O_2})=\frac{28}{32}=0,875`
`d_(\frac{CH_4}{O_2})=\frac{16}{32}=0,5`
`d_(\frac{C_2H_6}{O_2})=\frac{30}{32}=0,9375`