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
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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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Thermochemistry
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Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
Question
aNSWER q NO 17 ONLY
Transcribed Image Text: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
e.
a.
c.
III and IV
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 Å
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.
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