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22 March, 01:10

Answer true or false. A 163 g solution containing 8.0 mg of NaCl is 49 ppm.

O True

O False

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  1. 22 March, 01:24
    0
    True

    Explanation:

    The unit ppm is parts per million.

    In grams that is:

    grams of solute in 1,000,000 grams of solution

    Here, the solute is 8.0mg of NaCl. That is 0.0080g.

    The solution is 163 g.

    Then, set a proportion:

    0.0080g NaCl / 163g solution = x / 1,000,000g solution

    x = 1,000,000 g solution * 0.0080g NaCl / 163g solution x = 49.08 ppm

    Round to two significant figures = 49 ppm ← answer
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