The vapor pressure of chloroform is 173.11 mm Hg at 25°C.
How many grams of estrogen (estradiol), , a nonvolatile, nonelectrolyte (MW = 272.4 g/mol), must be added to 196.7 grams of chloroform to reduce the vapor pressure to 169.28 mm Hg?
chloroform = = 119.40 g/mol.