A gas mixture at 27^(@)C and 1 atm contains equal masses of He,H_(2),CO_(2) and CH_(4). How do their molecular velocities compare?

A gas mixture at 27^(@)C and 1 atm contains equal masses of He,H_(2),C

1.	A gas mixture at 27^(@)C and 1 atm contains equal masses of He,H_(2),CO_(2) and CH_(4). How do their molecular velocities compare?
Answer» `He=H_(2)=CO_(2)=CH^(4)` `HeltH_(2)ltCO_(2)ltCH_(4)` `H_(2)HeltCH_(4)ltCO_(2)` `CO_(2)ltCH_(4)ltHeltH_(2)` Answer :d