A mixture of helium and hydrogen gases is filled in a vessel at `30^(@) C`. Compare the rms velocities of molecules of the two gases. Atomic weights of hydrogen and helium are 1 and 4 respectively.

If root mean sqauare velocity of the molecules of hydrogen at NTP is 1.84 kms^(-1) , calculate the rms velocity of oxygen molecules at NTP. Molecular weights of hydrogen and oxygen are 2 and 32 respectively.

At what temperature the rms velocity of helium molecules will be equal to that of hydrogen molecules at NTP ?

We have two vessels of equal volume, one filled with hydrogen and the other with an equal mass of Helium. The common temperature is 27^(@)C a. What is the relative number of molecules in the two vessel? b. If pressure of Hydrogen veseel is 2 atm, what is the pressure of Helium? c. IF the temperatrue of Helium is kept at 27^(@)C and that of hydrogen is changed, at what temperature will its pressure become equal to that of helium? THe molceular weights of hydrogen and helium are 2 and 4 respectively.

Compared to hydrogen the atom of helium has

The temperature at which rms velocity of helium molecules is equal to the rms velocity of hydrogen molecules at NTP is

A vessel A contains hydrogen and another vessel B whose volume is twice that of A contains same mass of hydrogen at same temperature. Compare (i) average KE of hydrogen and oxygen molecule. (ii) root mean square speeds of molecules (iii) pressure of gases in A and B. Molecular weight of hydrogen and oxygen are 2 and 32 respectively.

The ratio of vapour densities of two gases at the same temperature is 8:9. Compare the rms velocities of their molecules.

Two identical vessels contain helium and hydrogen gases at same temperature, then

Ratio of the de Broglie wavelenght of molecules of helium and hydrogen at temperatur 27^(@) C and 327^(@) C respectively is

A cylinder has a mixture of hydrogen and oxygen gases in the ratio 1:3. the ratio of mean kinetic energies of the two gases is :