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Benzene,C6H6,and toluene,C6H5CH3,form ideal solutions.At 35°C the vapor pressure of benzene is 160.torr and that of toluene is 50.0 torr.In an experiment,3.9 mol of benzene and 5.7 mol of toluene are placed in a closed container at 35°C and allowed to come to equilibrium.What is the mole fraction of toluene in the vapor phase?
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