Molar mass
Anyone know how I should go at this problem?
A solution of an unknown substance is made by dissolving 712.0g. of the unknown solid in 150.0g. water. The vapor pressure of the solution is measured at 60 degrees C and is found to be 119.55mm Hg. If the vapor pressure of pure water is 149.44 mm Hg at 60C, calculate the molar mass of the solute.
Any help appreciated,
Sheryl
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