Question 1

Which of the following reactions would be an example of nitrogen fixation?

Accepted Answer

A)   N2(g)  + O2(g)  → 2 NO(g) 
B)   2 NO(g)  → N2(g)  + O2(g) 
C)   2 NH3(g)  → N2(g)  + 3 H2(g) 
D)   2 NO(g)  + O2(g)  → 2 NO2(g) E) A) and B)
F) All of the above

Question 2

The compound CFCl3 is used as a/an

Accepted Answer

A)   enzyme.
B)   anesthetic.
C)   gaseous fuel.
D)   coolant.
E)   CFC replacement.F) C) and E)
G) A) and E)

Question 3

What is the layer of the atmosphere called that is closest to the surface of the Earth and the thinnest layer of the atmosphere?

Accepted Answer

A)   outer atmosphere
B)   mesosphere
C)   thermosphere
D)   troposphere
E)   stratosphereF) B) and C)
G) A) and B)

Question 4

________ is the layer above the troposphere that consists of nitrogen, oxygen, and ozone.

Accepted Answer

The answer of ________ is the layer above the troposphere...

Question 5

The first step in the mechanism by which ozone is formed in the stratosphere is the

Accepted Answer

A)   reaction of O2 with CO.
B)   dissociation of O2 into oxygen atoms.
C)   combination of oxygen atoms with O2.
D)   combination of oxygen atoms to form O2.
E)   interaction of N2 with ultraviolet radiation.F) B) and D)
G) C) and D)

Question 6

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) B) and C)
F) A) and D)

Question 7

The wavelengths of light that are absorbed by stratospheric ozone are known to cause cancer.

Accepted Answer

A) True 
 B)False

Question 8

Which of these reactions is an example of nitrogen fixation?

Accepted Answer

A)   2N2O → 2N2 + O2
B)   NH3 + H2O → 2O → 2N2 + O2 
B)   NH3 + H2O →   + OH- 
C)   N2 + O2 → 2NO 
D)   2NO2 + H2O → HNO2 + HNO3 
E)   2NO + O2 → 2NO2" class="answers-bank-image d-inline" rel="preload" > + OH-
C)   N2 + O2 → 2NO
D)   2NO2 + H2O → HNO2 + HNO3
E)   2NO + O2 → 2NO2F) A) and B)
G) B) and E)

Question 9

________ is the brown haze seen over large cities caused by automobile exhaust.

Accepted Answer

The answer of ________ is the brown haze seen over...

Question 10

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) A) and D)

Question 11

Explain the main reason for the temperature rise on Earth because of high levels of CO2 in the atmosphere which causes the greenhouse effect.

Accepted Answer

Restricted air circulation bec...

Question 12

________ disrupt radio transmission and are responsible for spectacular celestial light known as auroras.

Accepted Answer

The answer of ________ disrupt radio transmission and are responsible...

Question 13

Which of the following is not a greenhouse gas?

Accepted Answer

A)   O3
B)   CO2
C)   NO
D)   O2
E)   None of these choices.F) A) and B)
G) A) and C)

Question 14

What is the wavelength of a photon needed to dissociate an S2 molecule whose bond energy is 226 kJ/mol (h = 6.63 × 10-34J s; c = 3.0 × 108m/s; and Avogadro's number = 6.022 × 1023molecules/mole) ?

Accepted Answer

A)   90 nm
B)   2.71nm
C)   5.3 × 105 nm
D)   9.0 × 104 nm
E)   530 nmF) C) and E)
G) B) and D)

Question 15

The atmosphere is ________ cooler if it does not contain CO2.

Accepted Answer

Question 16

What is the cause of radon being detected in homes?

Accepted Answer

Homes are built on r...

Question 17

Which of the following has not been blamed on the destruction of the ozone layer?

Accepted Answer

A)   damage to crops
B)   increased number of skin cancer cases
C)   genetic mutations
D)   increasing global CO2 concentrationsE) A) and B)
F) A) and C)

Question 18

Write out the steps in the mechanism of ozone destruction by chlorine atoms.

Accepted Answer

Cl(g) + O₃(g) → ClO(g...

Question 19

The rate constant of the reaction O + O3 → 2O2 is 7.0 × 105 M-1 s-1 at -40°C and 4.8 × 106 M-1 s-1 at 25°C. Calculate the activation energy of this reaction.

Accepted Answer

A)   2.0 kJ/mol
B)   17 kJ/mol
C)   1100 kJ/mol
D)   25. kJ/mol
E)   0.13 kJ/molF) A) and D)
G) D) and E)

Question 20

The depletion of ozone is particularly serious at Earth's poles because

Accepted Answer

A)   these cold areas experience little lightning.
B)   there are more industries in these areas.
C)   there is little O2 in these regions due to the earth's magnetic fields.
D)   polar "ice clouds" act as catalysts to convert HCl to Cl2.E) None of the above
F) All of the above

Exam 21: Environmental Chemistry

The compound CFCl3 is used as a/an

Correct AnswerverifiedShow Answer

What is the cause of radon being detected in homes?

Correct AnswerverifiedHomes are built on r...View AnswerShow Answer

The wavelengths of light that are absorbed by stratospheric ozone are known to cause cancer.

Correct AnswerverifiedShow Answer

What is the layer of the atmosphere called that is closest to the surface of the Earth and the thinnest layer of the atmosphere?

Correct AnswerverifiedShow Answer

The first step in the mechanism by which ozone is formed in the stratosphere is the

Correct AnswerverifiedShow Answer

________ is the brown haze seen over large cities caused by automobile exhaust.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

________ is the layer above the troposphere that consists of nitrogen, oxygen, and ozone.

Correct AnswerverifiedShow Answer

Which one of the following is not a greenhouse gas?

Correct AnswerverifiedShow Answer

The depletion of ozone is particularly serious at Earth's poles because

Correct AnswerverifiedShow Answer

________ disrupt radio transmission and are responsible for spectacular celestial light known as auroras.

Correct AnswerverifiedShow Answer

Write out the steps in the mechanism of ozone destruction by chlorine atoms.

Correct AnswerverifiedCl(g) + O3(g) → ClO(g...View AnswerShow Answer

Which of the following reactions would be an example of nitrogen fixation?

Correct AnswerverifiedShow Answer

The rate constant of the reaction O + O3 → 2O2 is 7.0 × 105 M-1 s-1 at -40°C and 4.8 × 106 M-1 s-1 at 25°C. Calculate the activation energy of this reaction.

Correct AnswerverifiedShow Answer

The atmosphere is ________ cooler if it does not contain CO2.

Correct AnswerverifiedShow Answer

Explain the main reason for the temperature rise on Earth because of high levels of CO2 in the atmosphere which causes the greenhouse effect.

Correct AnswerverifiedRestricted air circulation bec...View AnswerShow Answer

Which of these reactions is an example of nitrogen fixation?

Correct AnswerverifiedShow Answer

Which of the following has not been blamed on the destruction of the ozone layer?

Correct AnswerverifiedShow Answer

What is the wavelength of a photon needed to dissociate an S2 molecule whose bond energy is 226 kJ/mol (h = 6.63 × 10-34J s; c = 3.0 × 108m/s; and Avogadro's number = 6.022 × 1023molecules/mole) ?

Correct AnswerverifiedShow Answer

Which of the following is not a greenhouse gas?

Correct AnswerverifiedShow Answer

The compound CFCl₃ is used as a/an

Correct Answer
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Homes are built on r...
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Cl(g) + O₃(g) → ClO(g...
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The rate constant of the reaction O + O₃ → 2O₂ is 7.0 × 10⁵ M^-1 s^-1 at -40°C and 4.8 × 10⁶ M^-1 s^-1 at 25°C. Calculate the activation energy of this reaction.

Correct Answer
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The atmosphere is ________ cooler if it does not contain CO₂.

Correct Answer
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Explain the main reason for the temperature rise on Earth because of high levels of CO₂ in the atmosphere which causes the greenhouse effect.

Correct Answer
verified
Restricted air circulation bec...
View Answer

Correct Answer
verified

Correct Answer
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What is the wavelength of a photon needed to dissociate an S₂ molecule whose bond energy is 226 kJ/mol (h = 6.63 × 10^-34J s; c = 3.0 × 10⁸m/s; and Avogadro's number = 6.022 × 10²³molecules/mole) ?

Correct Answer
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Correct Answer
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