Vapour density is the density of a vapor in relation to that of the hydrogen atoms. It may be defined as the mass of a certain volume of a substance divided by the mass of the same volume of hydrogen. The vapor density of air is equal to one. The vapour density indicates whether the gas is denser or less dense. In the vapour density of gas calculator, enter the density of the gas and the density of hydrogen and click calculate to find the vapour density of gas.
If the density of oxygen is 12 and the density of hydrogen is 5. Find the vapour density of gas oxygen?
Vapour density of a gas = 12 / 5
= 2.4 .