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28 April, 00:58

What is the percent by mass of NaCl in a solution containing 3.6 g NaCl dissolved in water to make a 100.0 mL solution? (Hint: 1 mL of water = 1 g of water)

a. 0.035%

b. 3.5%

c. 3.6%

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Answers (1)
  1. 28 April, 01:42
    0
    The answer is c. 3.6%.

    If: 1 mL of water = 1 g of water

    Then: 100 mL of water = 100 g of water

    Now, 100 g of the solution is 100%. 3.6 g of NaCl is x.

    100 g : 100% = 3.6 g : x

    After crossing the products:

    x = 100% * 3.6 g : 100 g

    x = 3.6%
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