A quantity of liquid chloroform is placed in an open, transparent, three-liter flask and boiled long enough to purge all air from the vapor space. The flask is then sealed and allowed to equilibrate at 30°C, at which temperature chloroform has a vapor pressure of 243 mm Hg. Visual inspection shows 10 mL of liquid chloroform present.

(a) What is the pressure in the flask at equilibrium? Explain your reasoning.

(b) What is the total mass (grams) of chloroform in the flask? What fraction is in the vapor phase at equilibrium?