Question 1

Which one of the following indoor air pollutants has adverse health effects because it is radioactive

Accepted Answer

A)   formaldehyde
B)   carbon monoxide
C)   carbon dioxide
D)   radonE) A) and B)
F) B) and D)

Question 2

The steps in the mechanism of ozone destruction by chlorine atoms is shown here:
Cl2(g) + O3(g) $\rarr$ 2ClO(g) + O2(g)
ClO(g) + O(g) $\rarr$O2(g) + Cl(g)

Accepted Answer

A) True 
 B)False

Question 3

A possible reaction leading to removal of ClO from the atmosphere is 2ClO  →\rarr→  Cl2 + O2. Studies of this reaction have yielded an Arrhenius frequency factor (A)  and activation energy of 1.0 * 10-12 cm3 molecule-1 s-1 and 13.2 kJ/mol, respectively. Calculate the rate constant for the disappearance of ClO at -30 ∘\circ∘ C.

Accepted Answer

A)   1.5 * 10-15 M-1 s-1
B)   8.7 * 105 M-1 s-1
C)   2.9 * 10-15 M-1 s-1
D)   9.9 * 10-13 M-1 s-1
E)   1.7 * 106 M-1 s-1 F) B) and C)
G) C) and D)

Question 4

Which of the following is a promising candidate as an alternative to using chlorofluorocarbons as a coolant

Accepted Answer

A)   CCl2F2
B)   CClF3
C)   CFCl3
D)   CH2FCF3
E)   C3H8F) A) and D)
G) A) and C)

Question 5

The mechanism for the decomposition of ozone in the presence of a reactive chlorine atom is shown below. Which of the following species is an intermediate
O3 + (UV light)   →\rarr→  O + O2
Cl + O3  →\rarr→  ClO + O2
ClO + O  →\rarr→  Cl + O2

Accepted Answer

A)   Cl
B)   ClO
C)   O3
D)   O2
E)   UV light F) A) and B)
G) C) and D)

Question 6

Which region of the atmosphere contains the ozone layer

Accepted Answer

A)   thermosphere
B)   mesosphere
C)   stratosphere
D)   troposphereE) A) and D)
F) None of the above

Question 7

List the following greenhouse gases in order of their overall magnitude of contribution to global warming: N2O, CFCs, CO2, CH4.

Accepted Answer

A)   N2O 2 4
B)   N2O 4 2
C)   CO2 2O 4
D)   CH4 2O 2
E)   N2O 4 2F) B) and D)
G) All of the above

Question 8

Of the following which one, if any, is not one of the primary pollutants removed from automobile exhaust by catalytic converters.

Accepted Answer

A)   CO
B)   CO2
C)   NO
D)   Unburned hydrocarbons
E)   All of the above are removed from automobile exhaust through catalytic convertersF) C) and D)
G) A) and B)

Question 9

Which one of the following is not a greenhouse gas

Accepted Answer

A)   H2O
B)   O2
C)   CO2
D)   CH4
E)   CFCsF) B) and C)
G) All of the above

Question 10

An unusual atmospheric reaction leading to ozone destruction is CF3O + O3  →\rarr→  CF3O2 + O2, the analysis of which has yielded an Arrhenius frequency factor (A)  and activation energy of 2.0 * 10-12 cm3 molecule-1 s-1 and 11.6 kJ/mol, respectively. Calculate the rate constant for this reaction at an altitude of 35 km, where the temperature is -34 ∘\circ∘ C.

Accepted Answer

A)   2.0 * 10-12 M-1 s-1
B)   1.2 * 109 M-1 s-1
C)   3.5* 106 M-1 s-1
D)   7.9 * 10-15 M-1 s-1
E)   6.8 * 108 M-1 s-1 F) A) and E)
G) A) and D)

Question 11

Select all of the following that are capable of destroying stratospheric ozone through chemical means

I. CF2Cl2
II. NO
III. CO2

Accepted Answer

A)   I, II, and III
B)   I and III
C)   II and III
D)   I and II
E)   I onlyF) A) and B)
G) C) and D)

Question 12

The mechanism for the decomposition of ozone in the presence of a reactive chlorine atom is shown below. Which species functions as a catalyst
O3 + (UV light)   →\rarr→ O + O2
Cl + O3  →\rarr→  ClO + O2
ClO + O  →\rarr→  Cl + O2

Accepted Answer

A)   O
B)   Cl
C)   ClO
D)   CFCl3
E)   O2 F) A) and D)
G) B) and C)

Question 13

Which of the following would NOT help reduce the amount of CO2 introduced into the atmosphere

Accepted Answer

A)   Improving energy efficiency in automobiles
B)   Use of nuclear energy
C)   Recover methane gas generated at landfills
D)   Preservation of the Amazon jungle
E)   Converting forests to farmland for crops and grassland for cattleF) All of the above
G) B) and C)

Question 14

An increase in the amount of particulate matter (dust and smoke)  in the atmosphere may result in cooler world temperatures because

Accepted Answer

A)   more sunlight is absorbed by Earth.
B)   more infrared radiation is emitted into space.
C)   the dust reflects solar radiation.
D)   dust reacts with ozone in an exothermic reaction.E) None of the above
F) A) and C)

Question 15

The ozone layer in the atmosphere protects animals and plants from

Accepted Answer

A)   infrared radiation.
B)   acid rain.
C)   visible sunlight.
D)   radioactivity.
E)   ultraviolet rays.F) A) and E)
G) B) and E)

Question 16

Which statement about ozone and the ozone layer is true

Accepted Answer

A)   Ozone is found in a band of almost pure ozone several kilometers thick encircling the Earth.
B)   The ozone in the ozone layer absorbs UV light between 200 and 300 nm.
C)   Ozone is a compound with the chemical formula CO2.
D)   In the Earth's atmosphere, ozone exists only in the ozone layer.
E)   Ozone is used as a coolant in refrigerators and air conditioners.F) C) and D)
G) A) and E) B

Question 17

Which of the following reactions associated with nitrogen fixation by lightening is a disproportionation reaction
I. N2(g)  + O2(g)   →\rarr→  2NO(g) 
II. 2NO(g)  + O2(g)   →\rarr→  2NO2(g) 
III. 2NO2(g)  + H2O(l)   →\rarr→ HNO2(aq)  + HNO3(aq)

Accepted Answer

A)   I, II, and III
B)   II and III
C)   I and II
D)   I and III
E)   III only F) A) and B)
G) None of the above E

Question 18

Shown here are the four steps that show how sulfur in coal is converted to sulfuric acid in acid rain. Which step, if any, shows an unbalanced equation

Accepted Answer

A)  S(s)  + O2(g)   →\rarr→  SO2(g) 
B)  SO2(g)  + OH(g)   →\rarr→  HOSO2(g) 
C)  HOSO2(g)  + O2  →\rarr→  HO2(g)  + SO3(g) 
D)  SO3(g)  + H2O(l)   →\rarr→  H2SO4(aq) 
E)   None of the above are unbalanced equations F) C) and D)
G) B) and D)

Question 19

The steps in the reaction scheme for nitrogen fixation by lightening are as follow:
N2(g) + O2(g) $\underrightarrow{~~~~\text { lightening }~~~~}$ 2NO(g)
2NO(g) + O2(g) $\rarr$ 2NO2(g)
2NO2(g) + H2O(l) $\rarr$ HNO2(aq) + HNO3(aq)

Accepted Answer

A) True 
 B)False

Question 20

In order for a gas to be a "greenhouse gas" it must

Accepted Answer

A)   transmit visible light and absorb infrared radiation.
B)   be radioactive.
C)   transmit infrared light and absorb visible light.
D)   be combustible.
E)   absorb both visible light and infrared radiation.F) A) and E)
G) A) and D) A

Exam 20: Chemistry in the Atmosphere

Which one of the following indoor air pollutants has adverse health effects because it is radioactive

Correct Answer
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The steps in the mechanism of ozone destruction by chlorine atoms is shown here: Cl₂(g) + O₃(g) $\rarr$ 2ClO(g) + O₂(g) ClO(g) + O(g) $\rarr$ O₂(g) + Cl(g)

Correct Answer
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Correct Answer
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Which of the following is a promising candidate as an alternative to using chlorofluorocarbons as a coolant

Correct Answer
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The mechanism for the decomposition of ozone in the presence of a reactive chlorine atom is shown below. Which of the following species is an intermediate O₃ + (UV light) $\rarr$ O + O₂ Cl + O₃ $\rarr$ ClO + O₂ ClO + O $\rarr$ Cl + O₂

Correct Answer
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Which region of the atmosphere contains the ozone layer

Correct Answer
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List the following greenhouse gases in order of their overall magnitude of contribution to global warming: N₂O, CFCs, CO₂, CH₄.

Correct Answer
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Of the following which one, if any, is not one of the primary pollutants removed from automobile exhaust by catalytic converters.

Correct Answer
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Which one of the following is not a greenhouse gas

Correct Answer
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Correct Answer
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Select all of the following that are capable of destroying stratospheric ozone through chemical means I. CF₂Cl₂ II. NO III. CO₂

Correct Answer
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The mechanism for the decomposition of ozone in the presence of a reactive chlorine atom is shown below. Which species functions as a catalyst O₃ + (UV light) $\rarr$ O + O₂ Cl + O₃ $\rarr$ ClO + O₂ ClO + O $\rarr$ Cl + O₂

Correct Answer
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Which of the following would NOT help reduce the amount of CO₂ introduced into the atmosphere

Correct Answer
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An increase in the amount of particulate matter (dust and smoke) in the atmosphere may result in cooler world temperatures because

Correct Answer
verified

The ozone layer in the atmosphere protects animals and plants from

Correct Answer
verified

Which statement about ozone and the ozone layer is true

Correct Answer
verified
B

Which of the following reactions associated with nitrogen fixation by lightening is a disproportionation reaction I. N₂(g) + O₂(g) $\rarr$ 2NO(g) II. 2NO(g) + O₂(g) $\rarr$ 2NO₂(g) III. 2NO₂(g) + H₂O(l) $\rarr$ HNO₂(aq) + HNO₃(aq)

Correct Answer
verified
E

Shown here are the four steps that show how sulfur in coal is converted to sulfuric acid in acid rain. Which step, if any, shows an unbalanced equation

Correct Answer
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The steps in the reaction scheme for nitrogen fixation by lightening are as follow: N₂(g) + O₂(g) $\underrightarrow{\text { lightening }}$ 2NO(g) 2NO(g) + O₂(g) $\rarr$ 2NO₂(g) 2NO₂(g) + H₂O(l) $\rarr$ HNO₂(aq) + HNO₃(aq)

Correct Answer
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In order for a gas to be a "greenhouse gas" it must

Correct Answer
verified
A

Exam 20: Chemistry in the Atmosphere

Which one of the following indoor air pollutants has adverse health effects because it is radioactive

Correct AnswerverifiedShow Answer

The steps in the mechanism of ozone destruction by chlorine atoms is shown here: Cl2(g) + O3(g) →\rarr→ 2ClO(g) + O2(g) ClO(g) + O(g) →\rarr→ O2(g) + Cl(g)

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following is a promising candidate as an alternative to using chlorofluorocarbons as a coolant

Correct AnswerverifiedShow Answer

The mechanism for the decomposition of ozone in the presence of a reactive chlorine atom is shown below. Which of the following species is an intermediate O3 + (UV light) →\rarr→ O + O2 Cl + O3 →\rarr→ ClO + O2 ClO + O →\rarr→ Cl + O2

Correct AnswerverifiedShow Answer

Which region of the atmosphere contains the ozone layer

Correct AnswerverifiedShow Answer

List the following greenhouse gases in order of their overall magnitude of contribution to global warming: N2O, CFCs, CO2, CH4.

Correct AnswerverifiedShow Answer

Of the following which one, if any, is not one of the primary pollutants removed from automobile exhaust by catalytic converters.

Correct AnswerverifiedShow Answer

Which one of the following is not a greenhouse gas

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Select all of the following that are capable of destroying stratospheric ozone through chemical means I. CF2Cl2 II. NO III. CO2

Correct AnswerverifiedShow Answer

The mechanism for the decomposition of ozone in the presence of a reactive chlorine atom is shown below. Which species functions as a catalyst O3 + (UV light) →\rarr→ O + O2 Cl + O3 →\rarr→ ClO + O2 ClO + O →\rarr→ Cl + O2

Correct AnswerverifiedShow Answer

Which of the following would NOT help reduce the amount of CO2 introduced into the atmosphere

Correct AnswerverifiedShow Answer

An increase in the amount of particulate matter (dust and smoke) in the atmosphere may result in cooler world temperatures because

Correct AnswerverifiedShow Answer

The ozone layer in the atmosphere protects animals and plants from

Correct AnswerverifiedShow Answer

Which statement about ozone and the ozone layer is true

Correct AnswerverifiedB

Which of the following reactions associated with nitrogen fixation by lightening is a disproportionation reaction I. N2(g) + O2(g) →\rarr→ 2NO(g) II. 2NO(g) + O2(g) →\rarr→ 2NO2(g) III. 2NO2(g) + H2O(l) →\rarr→ HNO2(aq) + HNO3(aq)

Correct AnswerverifiedE

Shown here are the four steps that show how sulfur in coal is converted to sulfuric acid in acid rain. Which step, if any, shows an unbalanced equation

Correct AnswerverifiedShow Answer

The steps in the reaction scheme for nitrogen fixation by lightening are as follow: N2(g) + O2(g) lightening →\underrightarrow{~~~~\text { lightening }~~~~} lightening ​ 2NO(g) 2NO(g) + O2(g) →\rarr→ 2NO2(g) 2NO2(g) + H2O(l) →\rarr→ HNO2(aq) + HNO3(aq)

Correct AnswerverifiedShow Answer

In order for a gas to be a "greenhouse gas" it must

Correct AnswerverifiedA

Correct Answer
verified

The steps in the mechanism of ozone destruction by chlorine atoms is shown here: Cl₂(g) + O₃(g) $\rarr$ 2ClO(g) + O₂(g) ClO(g) + O(g) $\rarr$ O₂(g) + Cl(g)

Correct Answer
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Correct Answer
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Correct Answer
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The mechanism for the decomposition of ozone in the presence of a reactive chlorine atom is shown below. Which of the following species is an intermediate O₃ + (UV light) $\rarr$ O + O₂ Cl + O₃ $\rarr$ ClO + O₂ ClO + O $\rarr$ Cl + O₂

Correct Answer
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Correct Answer
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List the following greenhouse gases in order of their overall magnitude of contribution to global warming: N₂O, CFCs, CO₂, CH₄.

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Select all of the following that are capable of destroying stratospheric ozone through chemical means I. CF₂Cl₂ II. NO III. CO₂

Correct Answer
verified

The mechanism for the decomposition of ozone in the presence of a reactive chlorine atom is shown below. Which species functions as a catalyst O₃ + (UV light) $\rarr$ O + O₂ Cl + O₃ $\rarr$ ClO + O₂ ClO + O $\rarr$ Cl + O₂

Correct Answer
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Which of the following would NOT help reduce the amount of CO₂ introduced into the atmosphere

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified
B

Which of the following reactions associated with nitrogen fixation by lightening is a disproportionation reaction I. N₂(g) + O₂(g) $\rarr$ 2NO(g) II. 2NO(g) + O₂(g) $\rarr$ 2NO₂(g) III. 2NO₂(g) + H₂O(l) $\rarr$ HNO₂(aq) + HNO₃(aq)

Correct Answer
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E

Correct Answer
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The steps in the reaction scheme for nitrogen fixation by lightening are as follow: N₂(g) + O₂(g) $\underrightarrow{\text { lightening }}$ 2NO(g) 2NO(g) + O₂(g) $\rarr$ 2NO₂(g) 2NO₂(g) + H₂O(l) $\rarr$ HNO₂(aq) + HNO₃(aq)

Correct Answer
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Correct Answer
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A