A strontium isotope has a half-life of 90 years. What is the continuous compound rate of decay?

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A strontium isotope has a half-life of 90 years. What is the continuous compound rate of decay? Use the radioactive decay model in Problem 33.
Radioactive decay model
Q = Q0ert
where
Q0 = amount of the substance at time t = 0
r = continuous compound rate of decay
t = time in years
Q = amount of the substance at time t
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College Mathematics for Business Economics Life Sciences and Social Sciences

ISBN: 978-0321614001

12th edition

Authors: Raymond A. Barnett, Michael R. Ziegler, Karl E. Byleen

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