a) $d_{N_{2}/k^{2}}$ = $\frac{M_{N_{2}}}{M_{k^{2}}}$ = $\frac{28}{29}$ ≈ 0.97
b) $d_{CO_{2}/k^{2}}$ = $\frac{M_{CO_{2}}}{M_{k^{2}}}$ = $\frac{44}{29}$ ≈ 1.51
c) $d_{CO/k^{2}}$ = $\frac{M_{N_{CO}}}{M_{k^{2}}}$ = $\frac{26}{29}$ ≈ 0.9
d) $d_{C_{2}H_{4}/k^{2}}$ = $\frac{M_{C_{2}H_{4}}}{M_{k^{2}}}$ = $\frac{16}{29}$ ≈ 0.55