Radioactive decay can be described by the following equation In A = In Ao – kt where Ao is the original amount of the substance, A is the amount of the substance remaining after time t, and k is a constant that is characteristic of the substance. For the radioactive isotope strontium-80, k is 4.08 × 10-1 hours If the original amount of strontium-80 in a sample is 54.0 mg, how much strontium-80 remains after 1.82 hours have passed?

Chemistry & Chemical Reactivity
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ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
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Chapter25: Nuclear Chemistry
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Radioactive decay can be described by the following equation
In A = In Ao – kt
where Ao is the original amount of the substance, A is the amount of the substance remaining after time t, and k is a constant that is
characteristic of the substance.
For the radioactive isotope strontium-80, k is 4.08 × 10–1 hours.
If the original amount of strontium-80 in a sample is 54.0 mg, how much strontium-80 remains after 1.82 hours have passed?
mg
Transcribed Image Text:Radioactive decay can be described by the following equation In A = In Ao – kt where Ao is the original amount of the substance, A is the amount of the substance remaining after time t, and k is a constant that is characteristic of the substance. For the radioactive isotope strontium-80, k is 4.08 × 10–1 hours. If the original amount of strontium-80 in a sample is 54.0 mg, how much strontium-80 remains after 1.82 hours have passed? mg
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