At what temperature will oxygen molecules have some rms speed as helium molecules at STP (molecular masses of oxygen and helium are 32 and 4 respectively)

At what temperature will nitrogen molecules have same R.M.S. speed as oxygen molecules at 400 K (molecular weight of oxygen = 32, molecular weight of nitrogen = 28)

Compare the rms speed of hydrogen molecule at 127^@C with rms speed of oxygen molecules at 27^@C given that molecular masses of hydrogen and oxygen are 2 and 32 respectively.

At what temperature the molecule of nitrogen will have same rms velocity as the molecule of oxygen at 127^(@)C ?

If R.M.S. velocity of hydrogen molecule at N.T.P. is 1840 m//s , determine the R.M.S. velocity of oxygen molecule at N.T.P. (molecular weight of hydrogen and oxygen are 2 and 32, respectively).

At what temperature will be average speed of CH_(4) molecules have the same value as O_(2) has at 300K ?

At what temperature will the R.M.S. velocity for H_2 molecule-be same as that for O_2 molecule at 127° C?

At what temperature is the R.M.S. speed of gas molecules half the value at N.T.P.?