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Suppose a sample of a certain substance decayed to 69.8% of its original amount after 300 days. (Round your answers to two decimal places.)(a) What

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Suppose a sample of a certain substance decayed to 69.8% of its original amount after 300 days. (Round your answers to two decimal places.)(a) What is the half-life (in days) of this substance? days(b) How long would it take the sample to decay to one-third of its original amount? days

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