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5 May, 10:44

What is the percent by mass of a solution that contains 25 g KNO3 in 400.0 g H2O?

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Answers (2)
  1. 5 May, 12:32
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    Answer: 5.9%

    Explanation:

    Edge!
  2. 5 May, 13:20
    0
    5.9

    Explanation: use the formula mass % = mass of solute/mass of solution x 100

    add 400g of H2O and 25g of KNO3 to get your mass of solution which is 425

    Then device 25 / 425 and multiply by 100 to get 5.88 which rounds to 5.9
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