The specific heats, `C_(P)` and `C_(V)` of a gas of diatomic molecules, A are given (in units of `Jmol^(-1) K^(-1)`) by 29 and 22 , respectively. Another gas of diatomic molecules , B has the corresponding values 30 and 21. if they are treated as ideal gases, then :

The molar specific heat at constant volume C_v for diatomic gas is_____

At room temperature (27^@C) ,the rms speed of a diatomic gas molecules is found to be 1930 ms^(-1) .The gas is :

A gas mixture contains n_1 moles of a monoatomic gas and n_2 moles of gas of rigid diatomic molecules. Each molecule in monoatomic and diatomic gas has 3 and 5 degrees of freedom respectively. If the adiabatic exponent (C_p)/(C_v) for this gas mixture is 1.5, then the ratio n_1/n_2 will be