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A solution of CaCl 2 CaCl2 in water forms a mixture that is 38.0 % 38.0% calcium chloride by mass. If the total mass of the mixture is 360.3 g, 360.3 g, what masses of CaCl 2 CaCl2 and water were used?

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Answer:

Mass of CaCl₂ 136.9 g

Mass of water 223.4 g

Explanation:

The 38% by mass, means that the solution contains 38 g of CaCl₂ in 100 g of solution.

So, if the total mass of solution is 360.3 g let's make a rule of three to find out the mass of solute.

100 g _____ 38 g CaCl₂

360.3 g _____ (360.3 g . 38g)/ 100 g = 136.9 g of CaCl₂

Total mass of solution = 360.3 g →  Mass of solvent + Mass of solute

360.3 g = Mass of solvent + 136.9 g

360.3 g - 136.9 g  = Mass of solvent → 223.4 g

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