AP Chemistry

To prepare 1.000 kg of 5.5 percent by mass KCl (aq), one may dissolve

a. 994.5 g KCl in 5.5 g of water
b. 5.5 g KCl in 994.5 g of water
c. 5.5 g KCl in 1000.0 g of water
d. 55 g KCl in 945 g of water
e. 55.0 g KCl in 1000.0 g of water

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asked by Joe
  1. 5.5% by mass means
    5.5 g KCl + 94.5 g H2O = 100 g solution.
    Just multiply by 10 to obtain
    55 g KCl + 945 g H2O = 1,000 g solution.

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    posted by DrBob222
  2. thanks

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    posted by Joe

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