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1. A 11.1 g sample of an aqueous solution of perchloric acid contains an unknown amount of the acid. If 29.9 mL of 0.534 M sodium hydroxide are required to neutralize the perchloric acid, what is the percent by mass of perchloric acid in the mixture? ___% by mass 2. A 11.1 g sample of an aqueous solution of perchloric acid contains an unknown amount of the acid. If 29.9 mL of 0.534 M sodium hydroxide are required to neutralize the perchloric acid, what is the percent by mass of perchloric acid in the mixture? ___% by mass 3. In the laboratory you dissolve 21.9 g of lead acetate in a volumetric flask and add water to a total volume of 500 . mL. What is the molarity of the solution? ___M 4. In the laboratory you dissolve 21.9 g of lead(II) acetate in a volumetric flask and add water to a total volume of 500 mL. What is the molarity of the solution? ___M What is the concentration of the lead cation? ___M What is the concentration of the acetate anion? ___M
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