Name: 15. Which of the following reaction is a decomposition reaction? MgCl:(aq) + H;O(t) → Mg"(aq) + 2CH (aq) Fe;O,(s) + 3CO(g) - 2Fe(s) + 3CO:(g) 1. I. III. C,H,(g) + 50;(g)→ 3CO:(g) + 4H;0() IV. 2AGNO, (aq) + Zn(s) 2Ag(s) + Zn(NO,):(aq) V. 2KCIO,(s) → 2KCI(s) + 30:(g) I and V b. only I Il and IV d. only V Ill and IV a. c. e. 16. When an electron of an excited hydrogen atom falls from level n =2 to level n= 1, what wavelength of light is emitted? R = 1.097 x 107 m- 1820 A b. 4800 A 18.2 Å d. a. с. 1215 Å 970 A e. 17. A sample of xenon gas occupies a volume of 7.52 L at 53°C and 0.643 atm. If it is desired to decrease the volume of the gas sample to 4.60 L. while decreasing its pressure to 0.466 atm, the temperature of the gas sample at the new volume and pressure must be a. -63.4°C b. 23.6°C c. -128°C d. 145°C -204°C e.

Name: 15. Which of the following reaction is a decomposition reaction? MgCl:(aq) + H;O(t) → Mg"(aq) + 2CH (aq) Fe;O,(s) + 3CO(g) - 2Fe(s) + 3CO:(g) 1. I. III. C,H,(g) + 50;(g)→ 3CO:(g) + 4H;0() IV. 2AGNO, (aq) + Zn(s) 2Ag(s) + Zn(NO,):(aq) V. 2KCIO,(s) → 2KCI(s) + 30:(g) I and V b. only I Il and IV d. only V Ill and IV a. c. e. 16. When an electron of an excited hydrogen atom falls from level n =2 to level n= 1, what wavelength of light is emitted? R = 1.097 x 107 m- 1820 A b. 4800 A 18.2 Å d. a. с. 1215 Å 970 A e. 17. A sample of xenon gas occupies a volume of 7.52 L at 53°C and 0.643 atm. If it is desired to decrease the volume of the gas sample to 4.60 L. while decreasing its pressure to 0.466 atm, the temperature of the gas sample at the new volume and pressure must be a. -63.4°C b. 23.6°C c. -128°C d. 145°C -204°C e.

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter4: Energy And Chemical Reactions

Section: Chapter Questions

Problem 120QRT

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