1. The problem statement, all variables and given/known data Hi Everyone, I am having trouble grasping the concept of Raoult's law, partial pressures etc. One problem in specific is: A system contains 3 moles of methanol and 7 moles of water at 25 degrees celsius. The temperature is raised until there is 40 mol% methanol in the gas phase. How much is left in the liquid phase? The Txy diagram is attached. Thanks so much guys, Nick 2. Relevant equations Raoult's Law: yaPa=xaP*a Txy diagram attached 3. The attempt at a solution I believe this problem requires the use of Raoult's law in some form. I have written separate Raoult's law equations for water and methanol in the solution, but neither of these equations is solvable because there are too many unknowns and too few equations.