What is the molarity of 10.9 g KCl dissolved in 150.0 mL of water?

Name: What is the molarity of 10.9 g KCl dissolved in 150.0 mL of water?
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Question

Quizplus · Accepted Answer

To find molarity, divide moles of solute by liters of solution. Molar mass of KCl is 74.55 g/mol. Moles of KCl = 10.9 g / 74.55 g/mol = 0.146 mol. Volume in liters = 150.0 mL / 1000 = 0.150 L. Molarity = 0.146 mol / 0.150 L = 0.973 M, approximately 0.975 M.

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