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Question

A 250 mL solution contains 4.8 g of NaCl and has a density of 1.02 g/mL. What is the molarity? (Molar mass: NaCl = 58.5 g/mol)

Options

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Explanation

Moles of NaCl = 4.8/58.5 ≈ 0.0821 mol. Volume = 0.25 L. Molarity = 0.0821/0.25 ≈ 0.328 M.