Chemistry
What element in a liquid state is used in the cryogenic cooling of devices and materials?
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What group of elements include lithium, sodium, potassium, rubidium, cesium, and francium?
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A critical component of vitamin B-12, what element is the only metal found in vitamins?
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What two common ingredients cause an observable chemical reaction when mixed?
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What volume does 24 grams of ammonia gas occupy at standard temperature and pressure?
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Which scientist was the first to discover that for DNA, "A=T and C=G"?
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What is the common element in the metal alloys bronze and brass?
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