A rigid vessel of volume 0.400 m3 containing H2 at 21.25°C and a pressure of 715 X 103 Pa is connected to a second rigid vessel of volume 0.750 m3 containing Ar at 30.15°C at a pressure of 203 X 103 Pa. A valve separating the two vessels is opened and both are cooled to a temperature of 12.2°C. What is the final pressure in the vessels?