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Suppose a sample of a certain substance decayed to ?3.6% of Its original amount after 300 days. (Round your answers to two decimal places.) {a}

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Suppose a sample of a certain substance decayed to ?3.6% 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? 693.15 x days (b) How long would it take the sample to decay to one-third of Its original amount? at

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