Question 1

Which pollutant are you more likely to encounter in dangerous concentrations indoors rather than outdoors?

Accepted Answer

A)  nitrogen dioxide
B)  carbon monoxide
C)  ozone
D)  sulfur dioxideE) C) and D)
F) B) and C)

Question 2

The EPA limit for CO is 9 ppm.Express this number as a percentage.

Accepted Answer

A)  90%
B)  9%
C)  0.09%
D)  0.0009%E) A) and D)
F) B) and D) D

Question 3

Choose the proper coefficients for each substance to yield a balanced equation.

Accepted Answer

A)  1,1,1
B)  2,1,1
C)  2,1,2
D)  2,1,1.E) None of the above
F) A) and C) C

Question 4

Which of the following are examples of technological advances that have reduced air pollution?
__	Paint with reduced VOCs 
__	Catalytic converters 
__	Burning gasoline in leaf blowers 
__	Low sulfur Diesel fuels

Accepted Answer

X Paint with reduced VOCs
X C...

Question 5

The name of the compound formed by combining carbon atoms 
With oxygen atoms  To form  Is

Accepted Answer

A)  carbon oxide.
B)  monocarbon dioxide.
C)  carbon dioxide.
D)  carbonate.E) A) and B)
F) A) and C)

Question 6

Which substance is an element?

Accepted Answer

A)  NO2
B)  NaCl
C)  N2
D)  CH4E) A) and B)
F) A) and C)

Question 7

The most numerous of the elements are the

Accepted Answer

A)  metals.
B)  non metals.
C)  metalloids.
D)  noble gases.E) B) and D)
F) A) and C)

Question 8

Which diagram(s) best represent(s) only diatomic molecules?

Accepted Answer

A)  I only
B)  II only
C)  I and II only
D)  II and IV onlyE) A) and C)
F) B) and D)

Question 9

Of five major gaseous components of air,which is the only one to vary significantly in concentration from place to place and from day to day?

Accepted Answer

A)  water vapor
B)  carbon dioxide
C)  nitrogen
D)  argonE) A) and B)
F) B) and C)

Question 10

When assessing the risk of an air pollutant,which does not play a role in considering someone's exposure to the pollutant?

Accepted Answer

A)  a person's lung capacity
B)  a person's breathing rate
C)  the toxicity of the pollutant
D)  the concentration in air of the pollutantE) B) and D)
F) A) and D)

Question 11

Which pollutant is present in air as particulate matter?

Accepted Answer

A)  soot
B)  ozone
C)  sulfur dioxide
D)  carbon monoxideE) A) and C)
F) A) and D)

Question 12

Would a woman that inhaled 15,000 liters of air per day exceed the 24-hr average for inhalation of SO2 if she were exposed to 1150 μg of SO2 each day?

Accepted Answer

NO
Explanation: Consult Table ...

Question 13

Which correctly pairs an indoor pollutant with its source?

Accepted Answer

A)  formaldehyde and unvented space heaters
B)  O3 and electrical arcing
C)  radon and glues and solvents
D)  nicotine and paint and paint thinnersE) B) and C)
F) All of the above

Question 14

The quantity 8.7 × 105 g expressed in standard decimal notation is:

Accepted Answer

A)  0.000087 g
B)  870.000 g
C)  0.0000087 g
D)  870,000 gE) A) and B)
F) A) and C)

Question 15

Ozone is considered an air pollutant in the ________ but is a valuable protective layer in the __________.

Accepted Answer

A)  troposphere;stratosphere
B)  stratosphere;mesosphere
C)  stratosphere;troposphere
D)  mesosphere;stratosphereE) None of the above
F) All of the above

Question 16

Ozone is a secondary pollutant.A secondary pollutant is

Accepted Answer

A)  not as hazardous as a primary pollutant.
B)  not produced directly but as the product of the interaction of two or more pollutants.
C)  one that is naturally present in our atmosphere.
D)  one that is less hazardous than a primary pollutant.E) None of the above
F) A) and B)

Question 17

Balance this equation P4 + Cl2 → PCl5 with the smallest whole number coefficients.Choose the answer that is the sum of the coefficients.Do not forget coefficients of "one".

Accepted Answer

A)  7
B)  9
C)  11
D)  13
E)  15F) A) and D)
G) A) and E)

Question 18

There are approximately 2 × 1022 molecules and atoms in each breath we take and the concentration of CO in the air is approximately 9 parts per million.Approximately how many CO molecules are in each breath we take?

Accepted Answer

A)  2 × 1015
B)  1.8 × 1017
C)  2 × 1017
D)  2 × 1029E) None of the above
F) B) and C)

Question 19

Which is the balanced chemical equation showing hydrogen peroxide (H2O2) decomposing into hydrogen (H2) and oxygen (O2) ?

Accepted Answer

A)  H2O2 → H2 + O2
B)  H2 + O2 → H2O2
C)  2 H2 + O2 → 2 H2O2
D)  2 H2O2 → 2 H2 + O2E) A) and B)
F) C) and D) A

Question 20

Catalytic converters reduce the amount of ________ in car exhaust.

Accepted Answer

A)  O3
B)  CO2
C)  CO
D)  N2E) B) and C)
F) A) and D)

Exam 1: The Air We Breathe

Which pollutant are you more likely to encounter in dangerous concentrations indoors rather than outdoors?

Correct AnswerverifiedShow Answer

The EPA limit for CO is 9 ppm.Express this number as a percentage.

Correct AnswerverifiedD

Choose the proper coefficients for each substance to yield a balanced equation.

Correct AnswerverifiedC

Which of the following are examples of technological advances that have reduced air pollution? __ Paint with reduced VOCs __ Catalytic converters __ Burning gasoline in leaf blowers __ Low sulfur Diesel fuels

Correct AnswerverifiedX Paint with reduced VOCs X C...View AnswerShow Answer

The name of the compound formed by combining carbon atoms With oxygen atoms To form Is

Correct AnswerverifiedShow Answer

Which substance is an element?

Correct AnswerverifiedShow Answer

The most numerous of the elements are the

Correct AnswerverifiedShow Answer

Which diagram(s) best represent(s) only diatomic molecules?

Correct AnswerverifiedShow Answer

Of five major gaseous components of air,which is the only one to vary significantly in concentration from place to place and from day to day?

Correct AnswerverifiedShow Answer

When assessing the risk of an air pollutant,which does not play a role in considering someone's exposure to the pollutant?

Correct AnswerverifiedShow Answer

Which pollutant is present in air as particulate matter?

Correct AnswerverifiedShow Answer

Would a woman that inhaled 15,000 liters of air per day exceed the 24-hr average for inhalation of SO2 if she were exposed to 1150 μg of SO2 each day?

Correct AnswerverifiedNOExplanation: Consult Table ...View AnswerShow Answer

Which correctly pairs an indoor pollutant with its source?

Correct AnswerverifiedShow Answer

The quantity 8.7 × 105 g expressed in standard decimal notation is:

Correct AnswerverifiedShow Answer

Ozone is considered an air pollutant in the ________ but is a valuable protective layer in the __________.

Correct AnswerverifiedShow Answer

Ozone is a secondary pollutant.A secondary pollutant is

Correct AnswerverifiedShow Answer

Balance this equation P4 + Cl2 → PCl5 with the smallest whole number coefficients.Choose the answer that is the sum of the coefficients.Do not forget coefficients of "one".

Correct AnswerverifiedShow Answer

There are approximately 2 × 1022 molecules and atoms in each breath we take and the concentration of CO in the air is approximately 9 parts per million.Approximately how many CO molecules are in each breath we take?

Correct AnswerverifiedShow Answer

Which is the balanced chemical equation showing hydrogen peroxide (H2O2) decomposing into hydrogen (H2) and oxygen (O2) ?

Correct AnswerverifiedA

Catalytic converters reduce the amount of ________ in car exhaust.

Correct AnswerverifiedShow Answer

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D

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C

Which of the following are examples of technological advances that have reduced air pollution? Paint with reduced VOCs Catalytic converters Burning gasoline in leaf blowers Low sulfur Diesel fuels

Correct Answer
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X Paint with reduced VOCs
X C...
View Answer

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Would a woman that inhaled 15,000 liters of air per day exceed the 24-hr average for inhalation of SO₂ if she were exposed to 1150 μg of SO₂ each day?

Correct Answer
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NO
Explanation: Consult Table ...
View Answer

Correct Answer
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The quantity 8.7 × 10⁵ g expressed in standard decimal notation is:

Correct Answer
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Ozone is considered an air pollutant in the but is a valuable protective layer in the __.

Correct Answer
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Balance this equation P₄ + Cl₂ → PCl₅ with the smallest whole number coefficients.Choose the answer that is the sum of the coefficients.Do not forget coefficients of "one".

Correct Answer
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There are approximately 2 × 10²² molecules and atoms in each breath we take and the concentration of CO in the air is approximately 9 parts per million.Approximately how many CO molecules are in each breath we take?

Correct Answer
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Which is the balanced chemical equation showing hydrogen peroxide (H₂O₂) decomposing into hydrogen (H₂) and oxygen (O₂) ?

Correct Answer
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A

Correct Answer
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