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I understand how to get 8 but i am stuck on how to find the mole...

I understand how to get 8 but i am stuck on how to find the mole fraction above the solution

8.Find the vapor pressure at 25 °C of a solution in which the mole fractions of benzene and toluene are equal. The vapor pressures at 25 °C of pure benzene and toluene are 72.5 Torr and 26.7 Torr, respectively.

9. Find the mole fraction of each component of the vapor above the solution in exercise 8

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