The total pressure of an unknown gas and water in a closed container is 708.3 torr at 150 °C. Determine the partial pressure of the unknown gas after condensing water at 6°C if their mol ratio was 4:3. (Assume that volume is constant)

• A. 16.2 torr
• B. 267 torr
• C. 350 torr
• D. 405 torr

Answer: (B)