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7 February, 02:59

A saline solution contains 72.3 grams of NaCl in 500.0 mL if water. What is the concentration (Molarity) of this solution?

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  1. 7 February, 06:54
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    2.47 M

    Explanation:

    Molarity is (mol of solute) / (L of solvent). To find molarity, convert grams of NaCl to moles of NaCl and milliliters of water to liters of water.

    72.3 g : 58.44 g/mol = 1.2372 ... mol

    500 mL : 1000 mL = 0.5 L

    Molarity = 1.2372/0.5 = 2.47 M
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