# Chemistry

How many grams of CaCl2 are needed to make 100ml of a 15% solution in water if only the dihydrated (CaCl2⋅2 H2O) salt is available?

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asked by Yue
1. You want 15 g CaCl2. You will need
15 g CaCl2 x [(molar mass CaCl2.2H2O/molar mass CaCl2)] = ? g CaCl2.

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