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Chemistry, 14.07.2019 09:00, nadiasifuentes15
The half-life of radium-226 is 1590 years. if a sample contains 100 mg, how many mg will remain after 3000 years?
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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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