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Chemistry
What mineral has the chemical formula PbS?
Chemistry
What mineral has the chemical formula PbS?
Malachite
Galena
Lead
Graphite
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Which of these is a heavy gas used in specialized electric lamps?
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Unnilseptium on the periodic table is noted by which symbol?
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What fibrous substance, used in insulation and other products, can cause cancer?
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What element was named after the planet Uranus?
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When wood has been heated to remove almost all volatile gases and leave the carbon, it is called what?
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What is the approximate heat of vaporization of water at its boiling point?
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Acetylsalicylic acid is the chemical name for which?
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Which element has the chemical symbol Ca?
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