The vapour density of a mixture containing $NO_2$ and $N_2O_4$ is 38.3 at $27^{\large\circ}C$.Calculate the mole of $NO_2$ in 100g mixture

Question

$(a)\;1.09\qquad(b)\;0.956\qquad(c)\;0.437\qquad(d)\;0.0045$