Question

A mixture of gases have $O_2$ and $N_2$ at the ratio of 1 : 4, then what will be the ratio of no. of molecular in mixture of gases?

Answer 1

We know,

No. of moles $=\frac{\text{Given Mass}}{\text{Molar Mass}}$

So,

$\frac{N_{O_2}}{N_{N_2}}=\frac{\frac{1}{32}}{\frac{4}{28}}=7:32$