Question

a mixture of gas X (mol.wt.16)and gas Y(mol.wt.28) in the mole ratio a:b has a mean molecular weight 20.what would be mean molecular weight if the gases are mixed in the ratio b:a under identical conditions

Answer 1

let's say we have Nx mol of X and Ny mol of Y. how would you relate the average molec. weight to the Nx:Ny ratio?

Answer 2

i didn't get it what u want to say