Kinetic Theory of Gases Problem

[ucdawg12]

ok, Im having trouble understanding exactly what this problem wants from me, its asking:

At what temperature would the translational rms speed of hydrogen molecules be equal to that of oxygen molecules at 300K?

and the answer it gives me is 19K... but I really have no idea where to even start at on this problem

[Doc Al]

Temperature is a measure of the average translational KE of the molecules in the gas. (They are directly proportional.) So how would the rms speed depend on temperature and mass?

[prasanna]

Try searching for some formula on Kinetic theory of gases!

Once you get hold of the formula, it is very simple.

(the formula is simple too)