Question

Equal masses of oxygen, hydrogen and methane are taken in a container in identical conditions.Find the ratio of their volumes.

Answer 1

Molecular weights are 32, 2, and 16, respectively.

For every 1 mol of oxygen you need 16 of hydrogen and 2 of methane for equal mass.

The ratio of their volumes is 1 (O2) : 16 (H2) : 2 (CH4).