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19 November, 17:32

What is the mass of NaCl required to make 160 grams of a 12% solution of NaCl in

water?

1) 18 grams

2) 19 grams

3) 22 grams

4) 24 grams

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Answers (1)
  1. 19 November, 19:03
    0
    2) 19 grams

    Explanation:

    %m/m = (g solute/g solution) * 100

    g solute = (%m/m * g solution) / 100

    g solute = (12*160 g) / 100 g solute=19 g Nacl
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