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CHEM 1100 CHEMISTRY AND SOCIETY MIDTERM EXAM QUESTIONS WITH CORRCT ANSWERS
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CHEM 1100 CHEMISTRY AND SOCIETY MIDTERM EXAM QUESTIONS WITH CORRCT ANSWERS
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CHEM 1100 CHEMISTRY AND SOCIETYMIDTERM EXAM QUESTIONS WITH
CORRCT ANSWERS
Which component of the air makes up approximately 100 times more of an exhaled
breath than of an inhaled breath? - ANSWER- CO2
The ________ concentration in the air over the desert differs dramatically from that in
the air in the tropical rainforest. - ANSWER- H2O
Which component of the air is an element? - ANSWER- O3
Air is a ____? - ANSWER- mixture
A particular sample of air is 2.5% water vapor. Express the concentration of water vapor
in parts per million (ppm). - ANSWER- 250 ppm
Which pollutant is present in air as particulate matter? - ANSWER- soot
When assessing the risk of an air pollutant, which does not play a role in considering
someone's exposure to the pollutant? - ANSWER- a person's lung capacity
The burning of coal produces sulfur dioxide, SO2, a pollutant that slowly reacts in air to
form SO3. Sulfur trioxide dissolves into airborne water droplets to form a very corrosive
solution of sulfuric acid. Which is a product of burning coal that hastens the
transformation of sulfur dioxide into sulfur trioxide? - ANSWER- particles of ash
Which approach would help most to reduce indoor air pollution? - ANSWER- increasing
the air exchange
If we assume that the top of Mt. Everest is the highest land mass on earth, hikers who
scale its summit are standing in the _________ - ANSWER- troposphere
A young senator excited about Green Chemistry presents new legislation to set controls
on vehicles and industry to completely remove all pollutant molecules from the air.
Which is the best critique of this proposal? - ANSWER- Though this is a worthy goal, it
is not attainable regardless of regulations or incentives.
Critique the statement: "Air pollution is an unavoidable by-product of an
industrialized society—the more modern we become the more air pollution we have." -
ANSWER- Although burning fossil fuels does produce air pollutants, technology may
prevent
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