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Question

The vapor pressure of liquid iodomethane, CH3I, is 40.0 mm Hg at 249 K. A sample of CH3I is placed in a closed, evacuated container of constant volume at a temperature of 373 K. It is found that all of the CH3I is in the vapor phase and that the pressure is 56.0 mm Hg. If the temperature in the container is reduced to 249 K, which of the following statements are correct?