Practice question
Question
A solution contains 7 g of a solute (molar mass = 140 g/mol) in 350 mL of solution. What is the molarity?
Explanation
Moles of solute = (7/140) = 0.05 mol . Volume = 350 mL = 0.35 L. Molarity = (0.05/0.35) ≈ 0.1429 M .
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