Question 1

Both the Clinton and G.W. Bush administrations were unwilling to sign the Kyoto Protocol. What was their primary objection to the treaty?

Accepted Answer

A) The target emission levels are not sufficiently low to affect the greenhouse effect. 
B) The treaty does not include a provision for trading emission allowances. 
C) Developing countries are not required to control greenhouse gas emissions. 
D) Enforcement of the treaty will be impossible.

Question 2

Calculate the percentage,by mass,of fluorine in sulfur hexafluoride (SF6),a potent greenhouse gas.

Accepted Answer

A) 22.0% 
B) 59.2% 
C) 78.0% 
D) 82.1%

Question 3

The most abundant greenhouse gas in Earth's atmosphere is:

Accepted Answer

A) CO2 
B) H2O vapor 
C) N2 
D) CH4

Question 4

Identify the single most effective strategy to reduce carbon dioxide emissions.

Accepted Answer

A) Use methane rather than gasoline for fuel in cars and trucks. 
B) Develop alternate energy sources that do not rely on fossil fuels. 
C) Use wood as a home heating fuel. 
D) Convert all vehicles to diesel fuel.

Question 5

Calculate the mass of 25,000 molecules of nitrogen gas.(1 mole = 6.02 x 1023 molecules)

Accepted Answer

A) 5.81 × 10-19 g 
B) 1.16 × 10-18 g 
C) 7.00 × 105 g 
D) 5.38 × 1026 g

Question 6

Earth's atmosphere transmits the majority of which forms of electromagnetic radiation?
I.Infrared
II.Visible
III.Short wavelength UV (UV-C)
IV.Long wavelength UV (UV-A)

Accepted Answer

A) I and II only 
B) I and III only 
C) II and IV only 
D) III and IV only

Question 7

Argon,which comprises almost 1% of the atmosphere,is approximately 27 times more abundant than CO2,but does not contribute to global warming.Which explanation accounts for this fact?

Accepted Answer

A) Single atoms do not vibrate. 
B) Argon's vibrational energy is not excited by infrared radiation. 
C) Argon atoms are concentrated too high in the troposphere to interact with the earth's radiant energy. 
D) Argon is not an anthropogenic pollutant.

Question 8

CO2 emissions in China declined by 9% over the five-year period ending in 2000.If 5.00 × 108 metric tons (t)of CO2 was emitted in 1995,how much CO2 was released in 2000?

Accepted Answer

A) 4.55 × 109 t 
B) 4.55 × 108 t 
C) 4.50 × 108 t 
D) 4.55 × 107 t

Question 9

What evidence indicates that the rising atmospheric CO2 levels are caused by the combustion of fossil fuels?

Accepted Answer

A) Both the average global temperature and the atmospheric CO2 level have risen. 
B) The level of atmospheric moisture has increased. 
C) The 18O/16O ratio in atmospheric CO2 is the same as in atmospheric oxygen. 
D) The 14C/12C ratio in atmospheric CO2 is unusually low.

Question 10

The majority of N2O molecules in the atmosphere come from

Accepted Answer

A) bacterial removal of nitrate ions (NO3¯)from soil. 
B) burning of fossil fuels. 
C) decaying vegetable matter. 
D) landfills.

Question 11

Where is most of the carbon on earth stored?

Accepted Answer

A) in the form of fossil fuels and carbonate minerals and rocks 
B) in the forests and soil 
C) in surface water 
D) in the atmosphere

Question 12

Determine the shape or geometry of PH3.(Hint: Use the Periodic Table to arrive at the electron configuration for phosphorous. )

Accepted Answer

A) tetrahedral 
B) trigonal pyramidal 
C) bent 
D) trigonal planar

Question 13

The top graph shows the mean temperature over the past 160,000 years as determined from ice-core data.Which of graphs A through D best represents the carbon dioxide concentration in air over the same time period as measured from air bubbles trapped in the ice cores?

Accepted Answer

A) Graph A 
B) Graph B 
C) Graph C 
D) Graph D

Exam 3: The Chemistry of Global Climate Change

Both the Clinton and G.W. Bush administrations were unwilling to sign the Kyoto Protocol. What was their primary objection to the treaty?

Calculate the percentage,by mass,of fluorine in sulfur hexafluoride (SF₆) ,a potent greenhouse gas.

The most abundant greenhouse gas in Earth's atmosphere is:

Identify the single most effective strategy to reduce carbon dioxide emissions.

Calculate the mass of 25,000 molecules of nitrogen gas.(1 mole = 6.02 x 10²³ molecules)

Earth's atmosphere transmits the majority of which forms of electromagnetic radiation? I.Infrared II.Visible III.Short wavelength UV (UV-C) IV.Long wavelength UV (UV-A)

Argon,which comprises almost 1% of the atmosphere,is approximately 27 times more abundant than CO₂,but does not contribute to global warming.Which explanation accounts for this fact?

CO₂ emissions in China declined by 9% over the five-year period ending in 2000.If 5.00 × 10⁸ metric tons (t) of CO₂ was emitted in 1995,how much CO₂ was released in 2000?

What evidence indicates that the rising atmospheric CO₂ levels are caused by the combustion of fossil fuels?

The majority of N₂O molecules in the atmosphere come from

Where is most of the carbon on earth stored?

Determine the shape or geometry of PH₃.(Hint: Use the Periodic Table to arrive at the electron configuration for phosphorous. )

The top graph shows the mean temperature over the past 160,000 years as determined from ice-core data.Which of graphs A through D best represents the carbon dioxide concentration in air over the same time period as measured from air bubbles trapped in the ice cores?

Exam 3: The Chemistry of Global Climate Change

Both the Clinton and G.W. Bush administrations were unwilling to sign the Kyoto Protocol. What was their primary objection to the treaty?

Calculate the percentage,by mass,of fluorine in sulfur hexafluoride (SF6) ,a potent greenhouse gas.

The most abundant greenhouse gas in Earth's atmosphere is:

Identify the single most effective strategy to reduce carbon dioxide emissions.

Calculate the mass of 25,000 molecules of nitrogen gas.(1 mole = 6.02 x 1023 molecules)

Earth's atmosphere transmits the majority of which forms of electromagnetic radiation? I.Infrared II.Visible III.Short wavelength UV (UV-C) IV.Long wavelength UV (UV-A)

Argon,which comprises almost 1% of the atmosphere,is approximately 27 times more abundant than CO2,but does not contribute to global warming.Which explanation accounts for this fact?

CO2 emissions in China declined by 9% over the five-year period ending in 2000.If 5.00 × 108 metric tons (t) of CO2 was emitted in 1995,how much CO2 was released in 2000?

What evidence indicates that the rising atmospheric CO2 levels are caused by the combustion of fossil fuels?

The majority of N2O molecules in the atmosphere come from

Where is most of the carbon on earth stored?

Determine the shape or geometry of PH3.(Hint: Use the Periodic Table to arrive at the electron configuration for phosphorous. )

The top graph shows the mean temperature over the past 160,000 years as determined from ice-core data.Which of graphs A through D best represents the carbon dioxide concentration in air over the same time period as measured from air bubbles trapped in the ice cores?

Calculate the percentage,by mass,of fluorine in sulfur hexafluoride (SF₆) ,a potent greenhouse gas.

Calculate the mass of 25,000 molecules of nitrogen gas.(1 mole = 6.02 x 10²³ molecules)

Argon,which comprises almost 1% of the atmosphere,is approximately 27 times more abundant than CO₂,but does not contribute to global warming.Which explanation accounts for this fact?

CO₂ emissions in China declined by 9% over the five-year period ending in 2000.If 5.00 × 10⁸ metric tons (t) of CO₂ was emitted in 1995,how much CO₂ was released in 2000?

What evidence indicates that the rising atmospheric CO₂ levels are caused by the combustion of fossil fuels?

The majority of N₂O molecules in the atmosphere come from

Determine the shape or geometry of PH₃.(Hint: Use the Periodic Table to arrive at the electron configuration for phosphorous. )