The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is 1 : 4. The ratio of number of their molecule is

Given ratio of masses of oxygen and nitrogen = 1:4Let mass of O2 = xMass of N2 = 4xMolecules of O2 = x32NAMolecules of N2 =4x28NA Ratio of number of molecules= 7 : 32