The vapor pressure of diethyl ether (ether) is 463.57 mm Hg at 25°C.How many grams of estrogen (estradiol), C18H24O2, a nonvolatile, nonelectrolyte (MW = 272.4 g/mol), must be added to 192.1 grams of diethyl ether to reduce the vapor pressure to 452.63 mm Hg ?diethyl ether = CH3CH2OCH2CH3 = 74.12 g/mol.