The amount of radio active material present at time t is given by A=Aoekt, where Ao is the initial amount, k<0 is the rate of decay. Radioactive substances are more commonly described in terms of their half-life or the time required for half of the substance to decompose. Determine the half-life of substance X if after 600 years, a sample has decayed to 85% of its original mass.

The amount of radio active material present at time t is given by A=Aoekt, where Ao is the initial amount, k<0 is the rate of decay. Radioactive substances are more commonly described in terms of their half-life or the time required for half of the substance to decompose. Determine the half-life of substance X if after 600 years, a sample has decayed to 85% of its original mass.

Chemistry

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ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

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Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.

Question

12. The amount of radio active material present at time t is given by A=Aoe, where Ao is the initial amount, k<0 is
the rate of decay. Radioactive substances are more commonly described in terms of their half-life or the time
required for half of the substance to decompose. Determine the half-life of substance X if after 600 years, a
sample has decayed to 85% of its original mass.

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