If 0.75 moles of solute are dissolved in 0.50 kilograms of solvent, what is the molality?

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Multiple Choice

If 0.75 moles of solute are dissolved in 0.50 kilograms of solvent, what is the molality?

Explanation:
Molality is the number of moles of solute per kilogram of solvent. Here, 0.75 moles of solute in 0.50 kilograms of solvent gives a molality of 0.75 ÷ 0.50 = 1.5 mol/kg. So the solution’s molality is 1.5 m. This unit matters because it uses mass of solvent (not volume), which helps keep certain colligative properties consistent with temperature changes.

Molality is the number of moles of solute per kilogram of solvent. Here, 0.75 moles of solute in 0.50 kilograms of solvent gives a molality of 0.75 ÷ 0.50 = 1.5 mol/kg. So the solution’s molality is 1.5 m. This unit matters because it uses mass of solvent (not volume), which helps keep certain colligative properties consistent with temperature changes.

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