A) An aqueous solution of sodium nitrate, NaO3, is made by dissolving 21.6 grams of sodium nitrate in sufficient water in a 500. mL volumetric flask, and then adding enough water to fill the flask to the mark. What is the weight/volume percentage of sodium nitrate in the solution? Weight/volume percentage = _______%   B) An aqueous solution of ammonium fluoride, NH4F, is made by dissolving 32.4 grams of ammonium fluoride in sufficient water in a 500. mL volumetric flask, and then adding enough water to fill the flask to the mark. What is the weight/volume percentage of ammonium fluoride in the solution? Weight/volume percentage = ________%

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