
Concept explainers
Interpretation: The need of some greenhouse gases and problem having them in large amount needs to be explained.
Concept introduction: A Greenhouses gas takes up and releases radiant energy in infrared thermal range. Greenhouse emissions are responsible for greenhouse effects on earth that is global warming or heating up of the earth.

Answer to Problem 39A
Some greenhouses gases are needed because it traps heat. Problem with having too much of greenhouse gases is that it raises earth’s temperature to a higher level which causes global warming.
Explanation of Solution
Greenhouse gases capture radioactive radiations and radiate them back to the earth. For them, earth’s atmosphere will be significantly at low temperature. But having too many of greenhouse gases will cause temperature of earth to rise to higher levels and result in global warming.
Chapter 10 Solutions
World of Chemistry, 3rd edition
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