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Chemistry
What is the third most abundant gas in the earth's atmosphere?
Chemistry
What is the third most abundant gas in the earth's atmosphere?
Ozone
Argon
Carbon Dioxide
Hydrogen
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Which of these is a weakly ionized acid?
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What element was named after the planet Uranus?
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What is a substance made from only one type of atom called?
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All of the halogens form acids when bonded to what element?
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Which is the major form of sugar used by living things as fuel?
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What element is used as a filler gas in fluorescent and incandescent light bulbs?
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What makes matter expand when it's heated and contract when it's cooled?
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In an ethyne molecule, what is the hybridization of each of the carbons?
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