At 300 K, the density of a certain gaseous molecule at 2 bar is double to that of dinitrogen `(N_(2))` at 4 bar. The molar mass of gaseous molecule is:

At 0^(@)C the density of a gaseous oxide at 2 bar is same as that of nitrogen at 5 bar What is the molecular mass of the oxide ? .

A certain gaseous mixture contains methane and sulphur dioxide in ratio of 1:8 by mass. The ratio of the number of molecules is :-

Assertion: The enthalpy of formation of gaseous oxygen molecules at 298K and under1 atm is zero. Reason: The entropy of formation of gaseous oxygen molecules under the same condition is zero.

At the pressure of 3 atm,12.5 L of a certain gas weighs 15 g. The average speed of gaseous molecule is

A gaseous mixture contains oxygen and nitrogen in the ratio 1 : 4 by weight. Therefore, the ratio of the number of molecules is:

The density of a gas is found to be 1.56 g dm^(-3) at 0.98 bar pressure and 65^(@)C . Calculate the molar mass of the gas.

If partial pressure of N_2 in gaseous mixture containing equal mass of CO and N_2 is 0.5 atm then the total pressure of gaseous mixture is

The density of a gaseous element is 5 times that of oxygen under similar conditions. If the molecule is triatomic, what will be its atomic mass ?

A non-reacting gaseous mixture contains SO_2 and SO_3 in the mass ratio of 1 : 5. Find the ratio of the number of molecules

200 mL of an aqueous solution of a protein contains its 1.26g. The osmotic pressure of this solution at 300K is found to be 2.57 xx 10^(-3) bar. The molar mass of protein will be (R = 0.083 L bar mol^(-1)K^(-1))