Question 1

Which of these reactions is an example of nitrogen fixation?

Accepted Answer

A)  2N2O → 2N2 + O2 
B)  NH3 + H2O →   + OH- 
C)  N2 + O2 → 2NO 
D)  2NO2 + H2O → HNO2 + HNO3 
E)  2NO + O2 → 2NO2 
A)  2N2O → 2N2 + O2 
B)  NH3 + H2O →   + OH- 
C)  N2 + O2 → 2NO 
D)  2NO2 + H2O → HNO2 + HNO3 
E)  2NO + O2 → 2NO2

Question 2

What is the cause of radon being detected in homes?

Accepted Answer

Homes are built on r

Question 3

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)  radon 
A)  formaldehyde 
B)  carbon monoxide 
C)  carbon dioxide 
D)  radon

Question 4

Which of the following is not a greenhouse gas?

Accepted Answer

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

Question 5

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

Question 6

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

Accepted Answer

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

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

Question 9

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) 
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)

Question 10

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

Accepted Answer

Question 11

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

Question 12

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. 
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.

Question 13

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)  stratosphere 
A)  outer atmosphere 
B)  mesosphere 
C)  thermosphere 
D)  troposphere 
E)  stratosphere

Question 14

________ 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 15

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. 
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.

Question 16

Which one of the following is not a greenhouse gas?

Accepted Answer

A)  H2O 
B)  O2 
C)  CO2 
D)  CH4 
E)  CFCs 
A)  H2O 
B)  O2 
C)  CO2 
D)  CH4 
E)  CFCs

Question 17

________ 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 18

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 19

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

Accepted Answer

Cl(g) + O₃(g) → ClO(g

Question 20

The compound CFCl3 is used as a/an

Accepted Answer

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

Exam 21: Environmental Chemistry

Which of these reactions is an example of nitrogen fixation?

What is the cause of radon being detected in homes?

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

Which of the following is not a greenhouse gas?

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.

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

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

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

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

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

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)?

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

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

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

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

Which one of the following is not a greenhouse gas?

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

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

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

The compound CFCl3 is used as a/an

Chemistry: the Central Science

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Stoichiometry: Ratios of Combination

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Chemical Bonding II: Molecular Geometry and Bonding Theories

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Intermolecular Forces and the Physical Properties of Liquids and Solids

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Chemical Kinetics

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Acid-Base Equilibria and Solubility Equilibria

Entropy, Free Energy, and Equilibrium

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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.

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

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)?

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

The compound CFCl₃ is used as a/an