Exam 18: Chemistry of the Environment

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In the equation below, what is the meaning of the asterisk? O + O2 →O3*

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Sulfur compounds in the atmosphere are equally derived from natural sources and from human activity.

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List two of the three major sources of nitrogen and phosphorus in water.

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The brown color of photochemical smog over a city is mainly due to _ _.

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Nitrogen oxides catalytically destroy ozone.

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