Chemistry

Which of the following elements has the heaviest atomic weight?

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What are substances that control the rates of chemical reactions?
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What is the term for rain that contains chemical pollutants?
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Is mercury a solid, liquid or a gas?
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Which suicidal 19th century chemist has the single line etched on his tombstone "S=k log W"?
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What energy is stored in the form of chemical compounds?
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What reagent could oxidize an alcohol to a carbonyl?
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What is used to remove oxygen from cathode ray tubes and vacuum tubes?
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