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17 April, 13:26

How many grams of NaBr are needed to make 60 g of a 5.0% solution?

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  1. 17 April, 15:16
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    3.0 gram NaBr

    Explanation:

    A 5.0% aqueous solution of NaBr = > 5 grams NaBr per 100 grams of solution

    => 0.05 gram NaBr per 1.0 gram of solution

    => grams of NaBr for 60g of 5% solution = 0.05·g·NaBr/g·Soln X 60g·Soln

    = 3.0g NaBr
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