Chemistry

What alkali metal is highly radioactive and decays into either astatine, radium, or radon?

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Which chemical, also used in thermometers, was involved in early photo development?
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What gas makes up most of the atmosphere of Mars?
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Why is sodium nitrate used in processed meats?
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What substance is industrially prepared by the Haber Process?
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The Statue of Liberty is made of an iron frame with a sheet of what other metal hung over it?
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What is essential for calcium absorption by the human body?
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What does the gall bladder secrete?
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What is a mixture of gasoline and ethanol called?
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