Practice question
Question
What is the molality of a solution containing 10 g of glycerol (molar mass = 92 g/mol) in 200 g of water?
Explanation
Moles of glycerol = (10/92) ≈ 0.1087 mol . Mass of solvent = 200 g = 0.2 kg. Molality = (0.1087/0.2) ≈ 0.5435 mol/kg .
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