A radioactive substance decays exponentially: The mass at time t is m(t) = m(0)ekt, where m(0) is the initial mass and k is a negative constant. The mean life M of an atom in the substance is M = -k tekt dt. For a radioactive isotope, the value of k is -0.000149. Find the mean life (in years) of the isotope's atom. (Round your answer to one decimal place.) yr

A radioactive substance decays exponentially: The mass at time t is m(t) = m(0)ekt, where m(0) is the initial mass and k is a negative constant. The mean life M of an atom in the substance is M = -k tekt dt. For a radioactive isotope, the value of k is -0.000149. Find the mean life (in years) of the isotope's atom. (Round your answer to one decimal place.) yr

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter1: The Nature Of Chemistry

Section: Chapter Questions

Problem 110QRT

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