Question 1

________________ 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 2

What colors do excited nitrogen molecules emit?

Accepted Answer

The answer of What colors do excited nitrogen molecules emit?...

Question 3

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. 
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.

Question 4

Which one of the following is not one of the five gaseous components in highest concentration in the atmosphere?

Accepted Answer

A) CH4 
B) CO2 
C) N2 
D) Ar 
E) O2 
A) CH4 
B) CO2 
C) N2 
D) Ar 
E) O2

Question 5

Ozone (O3)and oxygen gas (O2)are examples of

Accepted Answer

A) isotopes. 
B) allotropes. 
C) polymorphs. 
D) alloys. 
E) amphoterism. 
A) isotopes. 
B) allotropes. 
C) polymorphs. 
D) alloys. 
E) amphoterism.

Question 6

What describes the trapping of heat near Earth's surface by gases (CO2)in the atmosphere?

Accepted Answer

A) restricted air flow 
B) flux 
C) heat trap 
D) greenhouse effect 
E) gasification 
A) restricted air flow 
B) flux 
C) heat trap 
D) greenhouse effect 
E) gasification

Question 7

The bond energy of N2 is 160 kJ/mol.What is the wavelength of a photon that can cause the dissociation of a N2 molecule? (h = 6.63 × 10-34J s; c = 3.0 × 108m/s and Avogadro's number = 6.022 × 1023 molecules/mole)

Accepted Answer

A) 749 nm 
B) 366 nm 
C) 233 nm 
D) 375 nm 
E) 650 nm 
A) 749 nm 
B) 366 nm 
C) 233 nm 
D) 375 nm 
E) 650 nm

Question 8

A possible reaction leading to removal of ClO from the atmosphere is 2ClO → Cl2 + O2.Studies of this reaction have yielded an Arrhenius frequency factor,A,and an 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°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 
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

Question 9

________________ is the layer of the atmosphere closest to the surface of the Earth.

Accepted Answer

The answer of ________________ is the layer of the atmosphere...

Question 10

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 11

What are the main mineral sources of phosphorus?

Accepted Answer

A) phosphides 
B) phosphites 
C) phosphors 
D) phosphates 
E) elemental phosphorus 
A) phosphides 
B) phosphites 
C) phosphors 
D) phosphates 
E) elemental phosphorus

Question 12

In the mid-1980's which of the following was discovered?

Accepted Answer

A) greenhouse gases 
B) Antarctic ozone hole 
C) radon gas 
D) CO poisoning in homes 
E) benzene in the Mississippi River 
A) greenhouse gases 
B) Antarctic ozone hole 
C) radon gas 
D) CO poisoning in homes 
E) benzene in the Mississippi River

Question 13

What happens to nitrogen dioxide in sunlight? Write the reaction for this process.

Accepted Answer

It decompo

Question 14

The rate constant of the reaction Cl + CHCl3 → HCl + CCl3 is 5.8 × 107 M-1 s-1 at 25°C and has an activation energy of 11.0 kJ/mol.Calculate the rate constant for this reaction in the lower stratosphere where the temperature is -57°C.

Accepted Answer

A) 1.1 × 107 M-1 s-1 
B) 4.2 × 107 M-1 s-1 
C) 4.9 × 109 M-1 s-1 
D) 9.5 × 106 M-1 s-1 
E) 2.7 × 109 M-1 s-1 
A) 1.1 × 107 M-1 s-1 
B) 4.2 × 107 M-1 s-1 
C) 4.9 × 109 M-1 s-1 
D) 9.5 × 106 M-1 s-1 
E) 2.7 × 109 M-1 s-1

Question 15

What is the noxious cloud of smoke and fog caused by SO2 which is formed by the reactions of automobile exhaust and sunlight?

Accepted Answer

A) primary pollutants 
B) secondary pollutants 
C) automotive discharge 
D) acid rain 
E) photochemical smog 
A) primary pollutants 
B) secondary pollutants 
C) automotive discharge 
D) acid rain 
E) photochemical smog

Question 16

Write chemical equations that show what happens when acid rain reacts with limestone rock

Accepted Answer

CaCO₃ + 2H⁺

Question 17

The primary source of photochemical smog is

Accepted Answer

A) the presence of greenhouse gases in the atmosphere. 
B) the action of ultraviolet light on ozone. 
C) water evaporating from farm fields. 
D) unfiltered emissions from coal-burning power plants. 
E) reactions of automobile exhaust in the presence of sunlight. 
A) the presence of greenhouse gases in the atmosphere. 
B) the action of ultraviolet light on ozone. 
C) water evaporating from farm fields. 
D) unfiltered emissions from coal-burning power plants. 
E) reactions of automobile exhaust in the presence of sunlight.

Question 18

_______________ is the biological or industrial conversion of molecular nitrogen into nitrogen compounds.

Accepted Answer

The answer of _______________ is the biological or industrial conversion...

Question 19

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. 
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.

Question 20

What is the name given to the incoming streams of solar protons and electrons oriented by Earth's magnetic field occurring in the Southern Hemisphere?

Accepted Answer

A) southern auroras 
B) Aurora autralis 
C) southern celesta ions 
D) Aurora borelis 
E) solar flares 
A) southern auroras 
B) Aurora autralis 
C) southern celesta ions 
D) Aurora borelis 
E) solar flares

Exam 21: Environmental Chemistry

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

What colors do excited nitrogen molecules emit?

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

Which one of the following is not one of the five gaseous components in highest concentration in the atmosphere?

Ozone (O3)and oxygen gas (O2)are examples of

What describes the trapping of heat near Earth's surface by gases (CO2)in the atmosphere?

The bond energy of N2 is 160 kJ/mol.What is the wavelength of a photon that can cause the dissociation of a N2 molecule? (h = 6.63 × 10-34J s; c = 3.0 × 108m/s and Avogadro's number = 6.022 × 1023 molecules/mole)

________________ is the layer of the atmosphere closest to the surface of the Earth.

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

What are the main mineral sources of phosphorus?

In the mid-1980's which of the following was discovered?

What happens to nitrogen dioxide in sunlight? Write the reaction for this process.

The rate constant of the reaction Cl + CHCl3 → HCl + CCl3 is 5.8 × 107 M-1 s-1 at 25°C and has an activation energy of 11.0 kJ/mol.Calculate the rate constant for this reaction in the lower stratosphere where the temperature is -57°C.

What is the noxious cloud of smoke and fog caused by SO2 which is formed by the reactions of automobile exhaust and sunlight?

Write chemical equations that show what happens when acid rain reacts with limestone rock

The primary source of photochemical smog is

_______________ is the biological or industrial conversion of molecular nitrogen into nitrogen compounds.

Which statement about ozone and the ozone layer is true?

What is the name given to the incoming streams of solar protons and electrons oriented by Earth's magnetic field occurring in the Southern Hemisphere?

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Stoichiometry Ratios of Combination

Reactions in Aqueous Solutions

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Quantum Theory and the Electronic Structure of Atoms

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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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Entropy Free Energy and Equilibrium

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Nonmetallic Elements and Their Compounds

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Filters

Ozone (O₃)and oxygen gas (O₂)are examples of

What describes the trapping of heat near Earth's surface by gases (CO₂)in the atmosphere?

The bond energy of N₂ is 160 kJ/mol.What is the wavelength of a photon that can cause the dissociation of a N₂molecule? (h = 6.63 × 10^-34J s; c = 3.0 × 10⁸m/s and Avogadro's number = 6.022 × 10²³ molecules/mole)

The rate constant of the reaction Cl + CHCl₃ → HCl + CCl₃ is 5.8 × 10⁷ M^-1 s^-1 at 25°C and has an activation energy of 11.0 kJ/mol.Calculate the rate constant for this reaction in the lower stratosphere where the temperature is -57°C.

What is the noxious cloud of smoke and fog caused by SO₂ which is formed by the reactions of automobile exhaust and sunlight?