If 5.0 mL of liquid chloroform (CHCl_3 density= 1.48 g/mL ; molar mass= 119.4 g/mol) were placed in a closed 5.0 L flask at 20 degrees C, what percentage (by mass) of the chloroform would remain as liquid in the flask after equilibrium is established between liquid and vapor chloroform? (the vapor pressure of chloroform at 20 degrees C is 0.208 atm)