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An initial amount of 100 g of the radioactive isotope thorium-234 decays according to Q(t) = 100e0.02828t where t is in years. How long before
An initial amount of 100 g of the radioactive isotope thorium-234 decays according to Q(t) = 100e0.02828t where t is in years. How long before half of the initial amount has disintegrated? This time is called the half-life of this isotope. (Round your answer to one decimal place.) t = yr
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