Syngas is the mixture of hydrogen and _____

Syngas is a mixture of

Syngas is a mixture of

Syngas is a mixture of

Syngas is a mixture of

A vessel of volume 0.02m^3 contains a mixture of hydrogen and helium at 20^@C and 2 atmospheric pressure. The mass of mixture is 5 gms. Find the ratio of mass of hydrogen to that of helium in the mixture.