3.71 | What mass of solid NaOH (97.0% NaOH by mass) is required to prepare 1.00 L of a 10.0%
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3.72 | What mass of HCl is contained in 45.0 mL of an aqueous HCl solution that has a density of
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3.80 | Find the molarity of a 40.0% by mass aqueous solution of sulfuric acid, H2SO4, for which the
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3.73 | The hardness of water (hardness count) is usually expressed in parts per million (by mass) of
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3.69 | What mass of a concentrated solution of nitric acid (68.0% HNO3 by mass) is needed to prepare
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3.76 | A throat spray is 1.40% by mass phenol, C6H5OH, in water. If the solution has a density of
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