A gas mixture consisting of hydrogen and carbon dioxide has a volume of 137.373 cm³ at 1.438 °C and 0.924 atm. The mixture is cooled to - 200 °C and the carbon dioxide solidifies. The hydrogen is rem

A gas mixture consisting of hydrogen and carbon dioxide has a volume of 137.373 cm³ at 1.438 °C and 0.924 atm. The mixture is cooled to - 200 °C and the carbon dioxide solidifies. The hydrogen is  removed from the vessel, and then the vessel is warmed to -5.007 °C and 0.951 atm, and the volume of gas is 66.066 cm³. Calculate the mole fraction of carbon dioxide in the original mixture.