Practice question
Question
A 300 mL solution contains 6 g of urea (NH₂CONH₂) and has a density of 1.02 g/mL. What is its molarity? (Molar mass: urea = 60 g/mol)
Explanation
Moles of urea = 6/60 = 0.1 mol. Volume = 0.3 L. Molarity = 0.1/0.3 ≈ 0.333 M.
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