The following chemical equation shows the reaction in which
natural gas (methane or CH4) is burned.
Refer to this equation while answering the following questions.
20. Refer to the equation above. Which of the molecules in
this reaction poses environmental danger when it is produced in too large a
quantity?
a) CH4
b) O2
c) CO2
d) H2O
The best answer is c.
CO2 (carbon dioxide) is a greenhouse
gas, meaning it causes the atmosphere to trap heat when the amount of carbondioxide
becomes too numerous in the atmosphere.
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Slichter