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17 September, 22:28

f 23.2 grams of an aqueous solution of nickel (II) iodide, NiI2, contains 5.47 grams of nickel (II) iodide, what is the percentage by mass of nickel (II) iodide in the solution?

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  1. 17 September, 22:54
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    the percentage by mass of Nickel (II) iodide = 23.58%

    Explanation:

    % by mass of solute = (mass of solute/mass of solution) x 100%

    % by mass of NiI2 = (mass of NiI2/mass of solution) x 100%

    % by mass of NiI2 = (5.47 grams/23.2 grams) x 100% = 23.58% m/m
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