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March 26, 2017

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A solution is prepared by dissolving 23.7 g of CaCl2 in 375 g of water. The density of the resulting solution?
is 1.05 g/ml. the concentration of CaCl2 is ________% by mass.

answer: 5.94

can someone tell me the steps?

  • chemistry - ,

    You don't need the density, only the definition of mass percent.
    mass percent = (mass solute/mass soln)*100 = ??
    You have 23.7 g solute in (375+23.7 = 398.7) grams solution.
    (23.7/398.7)*100 = 5.94% by mass.

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