A vapor mixture containing 40.0 mole % benzene and 60.0 mole % toluene at 1 atm is cooled isobarically in a closed container from an initial temperature of 115C. Use the Txy diagram below to answer the following questions. 115 110 1400 1300 105 100 Vapor 1200 95 1100 Temperature (C) 90 Liquid Pressure (mm Hg) 1000 Liquid 85 900 80 800 Vapor 75 700 70 600 65 500 0 0 1.0 1.0 0.2 0.4 0.6 0.8 Mole fraction benzene P= 1 atm 0.2 0.4 0.6 0.8 Mole fraction benzene T= 100C At what temperature does the last bubble of vapor condense? i C What is its composition? i mol benzene/mol