Use the References to access important values if needed for this question. The vapor pressure of benzene is 73.03mmHg at 25C. How many grams of estrogen (estradiol), C18H24O2, a nonvolatile, nonelectrolyte ( MW=272.4g/mol ), must be added to 205.4grams of benzene to reduce the vapor pressure to 72.11mmHg ? benzene =C6H6=78.12g/mol. Mass = 9