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11. What is the percent composition of sulfur in ammonium sulfate? (NH,),SO,? a. 6.7% b. 24% C. 28% d. 32%

11. What is the percent composition of sulfur in ammonium sulfate? (NH,),SO,? a. 6.7% b. 24% C. 28% d. 32%

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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10070 11. What is the percent composition of sulfur in ammonium sulfate? (NH,),SO,? a. 6.7% b. 24% C. 28% d. 32% 12. Which of these is a base? a. LIOH b. BaCl, C. KI d. KNO,
Transcribed Image Text:10070 11. What is the percent composition of sulfur in ammonium sulfate? (NH,),SO,? a. 6.7% b. 24% C. 28% d. 32% 12. Which of these is a base? a. LIOH b. BaCl, C. KI d. KNO,
3 of 6 100% 13. The chemical equation shows methane burned in the presence of oxygen gas. What type of reaction does the equation represent? CH, + 20, CO, + 2 H,0 a. Combination b. Single replacement c. Double replacement d. Combustion 14. The diagram represents the Lewis electron dot structure of a neutral element. Which element does the structure most likely represent? a. Na b. Mg C. CI d. Ar 15. A student fills a flask with 5 moles of nitrogen gas and then seals the flask. Which change will happen when the student warms the flask? a. The temperature will decrease. b. The pressure inside the flask will increase. c. The volume inside the flask will decrease. d. The molar mass of the gas will increase. 16. What is the appropriate percent composition of phosphorus in phosphoric acid H,PO,? a. 29.5% b. 31.6% c. 65.3% d. 98.0%
Transcribed Image Text:3 of 6 100% 13. The chemical equation shows methane burned in the presence of oxygen gas. What type of reaction does the equation represent? CH, + 20, CO, + 2 H,0 a. Combination b. Single replacement c. Double replacement d. Combustion 14. The diagram represents the Lewis electron dot structure of a neutral element. Which element does the structure most likely represent? a. Na b. Mg C. CI d. Ar 15. A student fills a flask with 5 moles of nitrogen gas and then seals the flask. Which change will happen when the student warms the flask? a. The temperature will decrease. b. The pressure inside the flask will increase. c. The volume inside the flask will decrease. d. The molar mass of the gas will increase. 16. What is the appropriate percent composition of phosphorus in phosphoric acid H,PO,? a. 29.5% b. 31.6% c. 65.3% d. 98.0%
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