Problem: Express the concentration of a 0.0720 M aqueous solution of fluoride, F2, in mass percentage and in parts per million. Assume the density of the solution is 1.00 g/mL.

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We are being asked to calculate the mass percentage and parts per million of the concentration of a 0.0720 M aqueous solution of fluoride, F2.


Recall that molarity is given by the following equation

Molarity = mol of soluteLiters of solution


Part A. Mass percentage


The mass percentage is given by the following equation

% mass = mass solutemass solution×100


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Problem Details

Express the concentration of a 0.0720 M aqueous solution of fluoride, F2, in mass percentage and in parts per million. Assume the density of the solution is 1.00 g/mL.

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