Some nonelectrolyte solute (molar mass 5 142 g/mol) was
Chapter 17, Problem 17.121(choose chapter or problem)
Some nonelectrolyte solute (molar mass 5 142 g/mol) was dissolved in 150. mL of a solvent (density 5 0.879 g/cm3). The elevated boiling point of the solution was 355.4 K. What mass of solute was dissolved in the solvent? For the solvent, the enthalpy of vaporization is 33.90 kJ/mol, the entropy of vaporization is 95.95 J K21 mol21, and the boiling-point elevation constant is 2.5 K kg/mol.
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