Chemistry
What radioactive metallic element, found in all uranium ores, has an atomic number of 89?
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What term is used for military use of harmful biological agents?
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The Nature of the Chemical Bond, was published in 1939, who wrote it?
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What is the name for naturally-occurring alloy of gold and silver with a small amount of other metals?
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Silver chloride and silver nitrate are both chemicals that darken with exposure to what?
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Dr Pepper shares what main ingredient of most antifreezes?
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What type of fuel do semi-trailer trucks generally use?
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