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» <html><body><p>`He=H_(2)=CO_(2)=CH^(4)`<br/>`HeltH_(2)ltCO_(2)ltCH_(4)`<br/>`H_(2)HeltCH_(4)ltCO_(2)`<br/>`CO_(2)ltCH_(4)ltHeltH_(2)`</p>Answer :d</body></html>