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What mass of HCl is contained in 45.0 mL of an aqueous HCl solution that has a density of 1.19 $\mathrm{cm}^{-3}$ and contains 37.21$\%$ HCl by mass?

19.93

Chemistry 102

Chemistry 101

Chapter 3

Composition of Substances and Solutions

Solutions

Composition

Rice University

Drexel University

University of Maryland - University College

University of Toronto

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we can use the mass percentage formula to figure out the mass of a particular compound in a certain solution, given its density. And so if our solution is 45 mL and we're looking at hydrogen hydrochloric acid, which has a density of 1.19 grams per centimeters cubed or grams per milliliter and we know that there is 37.21% of that HCL, we can convert 37.21 percent to 37.21 g per 100 g. We keep that ratio the same, multiply these two numbers and then divide by 100 to get 19.9 3 g of H. C. L.

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