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16 May, 19:18

What is the molarity of solution prepared by dissolving 11.75 g of KNO3 in enough water to produce 2.00 L of solution?

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  1. 16 May, 20:17
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    The molar mass of the compound potassium nitrate, KNO3 is equal to 101.1032 g/mol. Then, we determine the number of moles present in the given amount,

    n = 11.75g / (101.1032 g/mol) = 0.116 mol

    Then, molarity is calculated by dividing the number of moles by the volume of the solution. The answer is therefore 0.058 M.
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