$20\% N_2O_4$ molecules are dissociated in a sample of gas $27^{\large\circ}$ and 760 torr. Calculate the density of the equilibrium mixture.

Question

$(a)\;2.116g/l\qquad(b)\;3.116g/l\qquad(c)\;1.11g/l\qquad(d)\;0.28g/l$