All the molecules in a given sample of gas move with same speed.

Assertion: All molecules of an ideal gas more with the same speed. Reason: There is no attraction between the molecules in an ideal gas.

Comment on the following statement: the temperature of all the molecules in a sample of a gas is the same.

The numerical value of N/n (where N is the number of molecules in a given sample of gas and n is the number of moles of gas) is

The mean speed of the molecules of a hydrogen sample equals the mean speed of the molecules of a helium sample. Calculate the ratio of the temperature of the hydrogen sample to the temperature of the helium sample.

The mean speed of the molecules of a hydrogen sample equals the mean speed of the molecules of a helium sample. Calculate the ratio of the temperature of the hydrogen sample to the temperature of the helium sample.

Assertion: In case of collision of gas molecules in a given amount of gas, total kinetic energy is conserved. Reason: All collisions of the gas molecules in a given amount of gas are elastic.

The average speed of all the molecules in a gas at a given instant is not zero, whereas the average velocity of all the molecules is xero. Explain why ?

Consider an ideal gas model with an addition assumption. Instead of Maxwellian distribution of speed, all gas molecules at a certain level (say sea level) move with same speed equal to root mean square speed at a given temperature. If the temperature at sea level is 300 K, upto what height the oxygen gas would exist in atmosphere. take g=10m//s^(2) as constant.

The molecule of a given mas of gas have r.m.s. speed 200 ms^(-1) at 27^(@)C and 10^(5)Nm^(-2) pressure. When the absolute temperature is doubled and the pressure is halved, then find rms speed of the molecules of the same gas.