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8. Which of the following is true? Fe2O3(s) + 196.5 kcal 2 Fe(s) + 3/2 O2(g) A. Approximately 1.81 x 1024 formula units of Fe2O; are required to react with 393. kcal and this is an endothermic reaction. B. Approximately 2 moles of Fe are produced in the reaction that involves 393 kcal. C. Approximately 223. g of Fe are produced in the reaction that involves 393 kcal. D. Approximately 3.5 moles of O₂ are produced in the reaction that involves 393 kcal. E. More than one of these choices are correct or none of these choices are correct. 9. Which of the following is true concerning the following reaction? Br(g) 2Nal(aq) 2NaBr(aq) Iz(s) A. I:(s) is reduced and is the oxidizing agent and Br(aq) is oxidized and is the reducing agent. B. 12(s) is reduced and is the oxidizing agent and Br(g) is oxidized and is the reducing agent. C. Brz(g) is oxidized and is the reducing agent and I'(aq) is reduced and is the oxidizing agent. D. Brz(g) is reduced and is the oxidizing agent and I'(aq) is oxidized and is the reducing agent. E. None of these choices are correct. 10. Which of the following is true? A. Fluoride ions replace hydrogen ions in hydroxyapatite and this results in the formation of the less acid soluble fluoroapatite. B. Fluoride ions replace calcium ions in hydroxyapatite and this results in the formation of the less acid soluble fluoroapatite. C. Fluoride ions replace hydroxide ions in hydroxyapatite and this results in the formation of the more acid soluble fluoroapatite. D. Fluoride ions replace hydroxide ions in hydroxyapatite and this results in the formation of the less acid soluble fluoroapatite. E. None of these choices are correct.

8. Which of the following is true? Fe2O3(s) + 196.5 kcal 2 Fe(s) + 3/2 O2(g) A. Approximately 1.81 x 1024 formula units of Fe2O; are required to react with 393. kcal and this is an endothermic reaction. B. Approximately 2 moles of Fe are produced in the reaction that involves 393 kcal. C. Approximately 223. g of Fe are produced in the reaction that involves 393 kcal. D. Approximately 3.5 moles of O₂ are produced in the reaction that involves 393 kcal. E. More than one of these choices are correct or none of these choices are correct. 9. Which of the following is true concerning the following reaction? Br(g) 2Nal(aq) 2NaBr(aq) Iz(s) A. I:(s) is reduced and is the oxidizing agent and Br(aq) is oxidized and is the reducing agent. B. 12(s) is reduced and is the oxidizing agent and Br(g) is oxidized and is the reducing agent. C. Brz(g) is oxidized and is the reducing agent and I'(aq) is reduced and is the oxidizing agent. D. Brz(g) is reduced and is the oxidizing agent and I'(aq) is oxidized and is the reducing agent. E. None of these choices are correct. 10. Which of the following is true? A. Fluoride ions replace hydrogen ions in hydroxyapatite and this results in the formation of the less acid soluble fluoroapatite. B. Fluoride ions replace calcium ions in hydroxyapatite and this results in the formation of the less acid soluble fluoroapatite. C. Fluoride ions replace hydroxide ions in hydroxyapatite and this results in the formation of the more acid soluble fluoroapatite. D. Fluoride ions replace hydroxide ions in hydroxyapatite and this results in the formation of the less acid soluble fluoroapatite. E. None of these choices are correct.

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
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8. Which of the following is true? Fe₂O3(s) + 196.5 kcal 2 Fe(s) + 3/2 O2(g) A. Approximately 1.81 x 1024 formula units of Fe2O3 are required to react with 393. kcal and this is an endothermic reaction. B. Approximately 2 moles of Fe are produced in the reaction that involves 393 kcal. C. Approximately 223. g of Fe are produced in the reaction that involves 393 kcal. D. Approximately 3.5 moles of O₂ are produced in the reaction that involves 393 kcal. E. More than one of these choices are correct or none of these choices are correct. - 9. Which of the following is true concerning the following reaction? Brz(g) 2Nal(aq) 2NaBr(aq) 1:(s) A. 1:(s) is reduced and is the oxidizing agent and Br(aq) is oxidized and is the reducing agent. B. 12(s) is reduced and is the oxidizing agent and Brz(g) is oxidized and is the reducing agent. C. Br2(g) is oxidized and is the reducing agent and I'(aq) is reduced and is the oxidizing agent. D. Br₂(g) is reduced and is the oxidizing agent and I'(aq) is oxidized and is the reducing agent. E. None of these choices are correct. 10. Which of the following is true? A. Fluoride ions replace hydrogen ions in hydroxyapatite and this results in the formation of the less acid soluble fluoroapatite. B. Fluoride ions replace calcium ions in hydroxyapatite and this results in the formation of the less acid soluble fluoroapatite. C. Fluoride ions replace hydroxide ions in hydroxyapatite and this results in the formation of the more acid soluble fluoroapatite. D. Fluoride ions replace hydroxide ions in hydroxyapatite and this results in the formation of the less acid soluble fluoroapatite. E. None of these choices are correct.
Transcribed Image Text:8. Which of the following is true? Fe₂O3(s) + 196.5 kcal 2 Fe(s) + 3/2 O2(g) A. Approximately 1.81 x 1024 formula units of Fe2O3 are required to react with 393. kcal and this is an endothermic reaction. B. Approximately 2 moles of Fe are produced in the reaction that involves 393 kcal. C. Approximately 223. g of Fe are produced in the reaction that involves 393 kcal. D. Approximately 3.5 moles of O₂ are produced in the reaction that involves 393 kcal. E. More than one of these choices are correct or none of these choices are correct. - 9. Which of the following is true concerning the following reaction? Brz(g) 2Nal(aq) 2NaBr(aq) 1:(s) A. 1:(s) is reduced and is the oxidizing agent and Br(aq) is oxidized and is the reducing agent. B. 12(s) is reduced and is the oxidizing agent and Brz(g) is oxidized and is the reducing agent. C. Br2(g) is oxidized and is the reducing agent and I'(aq) is reduced and is the oxidizing agent. D. Br₂(g) is reduced and is the oxidizing agent and I'(aq) is oxidized and is the reducing agent. E. None of these choices are correct. 10. Which of the following is true? A. Fluoride ions replace hydrogen ions in hydroxyapatite and this results in the formation of the less acid soluble fluoroapatite. B. Fluoride ions replace calcium ions in hydroxyapatite and this results in the formation of the less acid soluble fluoroapatite. C. Fluoride ions replace hydroxide ions in hydroxyapatite and this results in the formation of the more acid soluble fluoroapatite. D. Fluoride ions replace hydroxide ions in hydroxyapatite and this results in the formation of the less acid soluble fluoroapatite. E. None of these choices are correct.
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