Practice question
Question
What is the mass percentage of NaCl in a solution made by dissolving 5.85 g of NaCl in 44.15 g of water? (Molar mass: NaCl = 58.5 g/mol)
Explanation
Total mass = 5.85 + 44.15 = 50 g. Mass % = (5.85/50) × 100 = 11.7%.
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