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K The half-life of a radioactive substance is 25 years. If you start with some amount of this substance, what fraction will remain in 50

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K The half-life of a radioactive substance is 25 years. If you start with some amount of this substance, what fraction will remain in 50 years? What fraction will remain in 100 years? The fraction that will remain in in 50 years is the following. (Simplify your answer.)

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