A solution is prepared by dissolving 15.0 g of NH₃in 250 g of water. The density of the resulting solution is 0.974 g/mL. The mole fraction of NH₃in the solution is _ _. A) 0.0597 B) 0.922 C) 0.940 D) 0.0640 E) 16.8

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Quizplus · Accepted Answer

The mole fraction of NH3 in the solution is 0.0597. This is calculated by dividing the moles of NH3 by the total moles of solute and solvent. The moles of NH3 are calculated by dividing the mass of NH3 by its molar mass. The moles of water are calculated by dividing the mass of water by its molar mass. The total moles of solute and solvent are the sum of the moles of NH3 and the moles of water.

A Solution Is Prepared by Dissolving 15