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How many grams of CaCl2 are needed to make 378.9 g of a solution that is 28.0% (m/m) calcium chloride in water? Note that mass is not technically the same thing as weight, but % (m/m) has the same mea...

How many grams of CaCl2 are needed to make 378.9 g of a solution that is 28.0% (m/m) calcium chloride in water? Note that mass is not technically the same thing as weight, but % (m/m) has the same meaning as % (w/w).

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Answer #1

Mass% of CaCl2 = 28.0%

28.0g of CaCl2 present in 100g of the solution

So,

mass of CaCl2 required for 378.9g of the solution= (28g/100g) × 378.9g = 106.09g

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