Limone (MW 136g/mol) is a pleasant smelling liquid found in lemon and orange peels. The boiling point of limonene is 175 ˚C, but it co-distills with water at 97.5 ˚C. If the vapour pressure of water at 97.5˚C is 690 mmHg, what percent (by mass) of the steam-distillate is limonene? (Assuming that the distillation is occurring at 760 mmHg)
Ptotal= Pa+ Pb
760 = 690 + Pb
Pb = 70
Don't know what to do from here