The vapor pressure of pure THF at 20 °C is 0.1651 atm. When 10 g of an unknown non-volatile non-dissociating solute A is dissolved in 100 g THF, the vapor pressure of solution at 20 °C is 0.1562 atm. Calculate the mole fraction of solute A in the solution. 0.395 Oa. b. 0.946 0.824 Oc. d. 0.054 O e. 0.176

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