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Chemistry, 30.12.2019 12:31 jwbri

An element has a half-life of 30 years. if 1.0 mg of this element decays over a period of 90 years, how many mg of this element would remain?

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An element has a half-life of 30 years. if 1.0 mg of this element decays over a period of 90 years,...

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