\(d_{O_2\text{/}Cl_2}=\dfrac{32}{71}\approx0,451\\ d_{O_2\text{/}H_2}=\dfrac{32}{2}=16\)
dO2/H2 = \(\dfrac{32}{2}=16\)
=> khí Oxi nặng hơn khid Hidro 16 lần
dO2/Cl2 = \(\dfrac{32}{35,5}=\dfrac{64}{71}\)
=> khí Oxi nhẹ hơn khí Clo = \(\dfrac{64}{71}\) lần