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6. The amount of calcium present in milk can be determined by adding oxalate to a sample and measuring the mass of calcium oxalate precipitated. What is the mass percent of calcium if g of calcium oxalate forms in a 125-g sample of milk when excess aqueous sodium 0.429 oxalate is added? Na,C2O4(aq) + Ca²*(aq) → CaC2O4(s) + 2Na*(aq) a. 0.107% b. 0.202% 0.343% с. d. 1.10% е. 1.37%

6. The amount of calcium present in milk can be determined by adding oxalate to a sample and measuring the mass of calcium oxalate precipitated. What is the mass percent of calcium if g of calcium oxalate forms in a 125-g sample of milk when excess aqueous sodium 0.429 oxalate is added? Na,C2O4(aq) + Ca²*(aq) → CaC2O4(s) + 2Na*(aq) a. 0.107% b. 0.202% 0.343% с. d. 1.10% е. 1.37%

General Chemistry - Standalone book (MindTap Course List)
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter4: Chemical Reactions
Section: Chapter Questions
Problem 4.88QP: A 1.345-g sample of a compound of barium and oxygen was dissolved in hydrochloric acid to give a...
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F12 F11 ID: A Date: Class: ID: A 24. 6. The amount of calcium present in milk can be determined by adding oxalate to a sample and measuring the mass of calcium oxalate precipitated. What is the mass percent of calcium if 0.429 g of calcium oxalate forms in a 125-g sample of milk when excess aqueous sodium oxalate is added? Na,C2O4(aq) + Ca²*(aq) → CaC2O4(s) + 2Na*(aq) a. 0.107% b. 0.202% с. 0.343% d. 1.10% е. 1.37% 25. Identify all the spectator ions in the following reaction. KSO4(aq) + 2MNSO4(aq) + 5FE2(SO4)3(aq)
Transcribed Image Text:F12 F11 ID: A Date: Class: ID: A 24. 6. The amount of calcium present in milk can be determined by adding oxalate to a sample and measuring the mass of calcium oxalate precipitated. What is the mass percent of calcium if 0.429 g of calcium oxalate forms in a 125-g sample of milk when excess aqueous sodium oxalate is added? Na,C2O4(aq) + Ca²*(aq) → CaC2O4(s) + 2Na*(aq) a. 0.107% b. 0.202% с. 0.343% d. 1.10% е. 1.37% 25. Identify all the spectator ions in the following reaction. KSO4(aq) + 2MNSO4(aq) + 5FE2(SO4)3(aq)
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