Chemistry
What symbol appears on the periodic table for Thorium which has the atomic number 90?
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What noble gas has the lowest melting and boiling points of all the elements?
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Which element is a poisonous gas that combines with sodium to form table salt?
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What type of fuel do semi-trailer trucks generally use?
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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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Approximately how many toxic chemicals are released while a diesel engine idles?
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What property is a measurement of how hot or cold something is?
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