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The half-life of radium-226 is 1590 years. if a sample contains 100 mg, how many mg will remain after 4000 years?
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In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?
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Compare and contrast physical changes with chemical changes.
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The half-life of radium-226 is 1590 years. if a sample contains 100 mg, how many mg will remain afte...
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