Americium-241 is used in smoke detectors. It has a first order rate constant for
Chapter 20, Problem 14.105(choose chapter or problem)
Americium-241 is used in smoke detectors. It has a first order rate constant for radioactive decay of .By contrast,iodine-125,which is used to test for thyroid functioning, has a rate constant for radioactive decay of . (a) What are the halflives of these two isotopes? (b) Which one decays at a faster rate? (c) How much of a 1.00-mg sample of each isotope remains after 3 half-lives? (d) How much of a 1.00-mg sample of each isotope remains after 4 days?
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