Need help with all of these please 3 of 6100%13. The chemical equation shows methane burned in the presence of oxygen gas. What type of reaction does theequation represent?CH, + 2 0, CO, +2 H,0a. Combinationb. Single replacementc. Double replacementd. Combustion14. The diagram represents the Lewis electron dot structure of a neutral element. Which element does the structuremost likely represent?a. Nab. Mgс. СId. Ar15. A student fills a flask with 5 moles of nitrogen gas and then seals the flask. Which change will happen when thestudent warms the flask?a. The temperature will decrease.The pressure inside the flask will increase.c. The volume inside the flask will decrease.d. The molar mass of the gas will increase.b.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% 17. An engine cylinder contains .25 L of gas at a pressure of 1 atm. As the engine runs, the gas in compressed to.025 L. What is the new pressure of the gas?a. .10 atmb. 10.0 atmC. 25 atmd. 250 atm18. What is the approprste mass of 1.5 moles of ammonia NH,?a. 10.0 gramsb. 15.0 gramsc. 17.0 gramsd. 25.5 grams19. What is the total number of electrons in all s orbitalsa neutral atom of phosphorus?a.2.b. 4C.6.d.8

13) the chemical equation that show methane burn in presence of oxygen gas which is Combustion…

13. The chemical equation shows methane burned in the presence of oxygen gas. What type of reaction does the equation represent? CH, +2 0, 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%

13. The chemical equation shows methane burned in the presence of oxygen gas. What type of reaction does the equation represent? CH, +2 0, 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%

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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