If polystyrene has 200 repeating units . Its molecular mass is `x xx 10^2`. `x` is

x^3 xx x^2 xx x^10

In a polymer sample 30% molecules have a molecular mass 20,000 , 40% have molecular mass 30,000 and rest have 60,000 .The number average molecular mass is x times10^(4) then x is

The density of a gas A is three times that of a gas B. It the molecular mass of A is M, the molecular mass of B is

The rate of diffusion of a gas X is sqrt(2) times that of Y. If the molecular masss X is 16, what is the molecular mass of gas y?

A sample of a polymer contains 200 molecules of molecular mass 10^(3) each, 300 molecules of molecular mass 10^(4) each and 500 molecules each having 10^(5) as molecular mass. Calculate bar(M)_(N) and bar(M)_(W) for the sample

Butane-2, 3-dione on reaction with PCl_(5) changes its molecular mass by X amu. The value of X is

The absolute mass of one molecules of a substance is 5.32 xx 10^(-23) g . What is its molecular mass ? What could this substance be ?