Chemistry
What radioactive metallic element, found in all uranium ores, has an atomic number of 89?
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Which of the following is used as a rating scale to grade gasoline?
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Who performed the infamous gold-foil experiment that first detected the existence of the atomic nucleus?
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What is the stinky gas associated with swamps and anaerobic decomposition?
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What extremely flammable gas was associated with the famous explosion of the Hindenburg airship?
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What is an atom that has more electrons than normal referred to as?
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