Chemistry

What is added to drinking water and to swimming pools to serve as a disinfectant?

More Questions from Chemistry
What type of property does the water cycle show?
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Most metals are gray in color; what is the only metal that is yellow?
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What are the building blocks of matter called?
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Which of these is an element?
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What is the second-most abundant element in the universe, though it is much less common on Earth?
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What volume does 24 grams of ammonia gas occupy at standard temperature and pressure?
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Which of these is a heavy gas used in specialized electric lamps?
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What kind of gas is CO2?
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