The partial pressures of an equilibrium mixture of N2O4(g) and NO2(g) are PN2O4 = 0.34 atm and

Question:

The partial pressures of an equilibrium mixture of N2O4(g) and NO2(g) are PN2O4 = 0.34 atm and PNO2 = 1.20 atm at a certain temperature. The volume of the container is doubled. Calculate the partial pressures of the two gases when a new equilibrium is established.