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A 20.0 wt% solution of CaCl2 (110.98 g/mol) has a density of 1.185 g/mL. What is...

A 20.0 wt% solution of CaCl2 (110.98 g/mol) has a density of 1.185 g/mL. What is the mass (in milligrams) of a 19.9-mL solution of 20.0 wt% CaCl2?What is the mass (in grams) of CaCl2 in 419.4 mL of a 20.0 wt% solution of CaCl2? What is the formal concentration of CaCl2 (in molarity) of the 419.4-mL CaCl2 solution described in the previous question?

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