Practice question
Question
What is the molality of a solution containing 14 g of ethylene glycol (molar mass = 62 g/mol) in 350 g of water?
Explanation
Moles of ethylene glycol = (14/62) ≈ 0.2258 mol . Mass of solvent = 350 g = 0.35 kg. Molality = (0.2258/0.35) ≈ 0.645 mol/kg .
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