(Answered) A solution contains 0115 mol h2o and an unknown number of

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A solution contains 0.115 mol H2O and an unknown number of moles of sodium chloride. The vapor pressure of the solution at 30 degrees C is 25.7 torr. The vapor pressure of pure water at 30 degrees C is 31.8 torr. Calculate the number of moles of sodium chloride in the solution.

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