Chemistry, 23.11.2019 07:31 allenpaietonp9v8sv
Americium-241 is used in smoke detectors. it has a first-order rate constant for radioactive decay of k = 1.6x10^−3yr−1. by contrast, iodine-125, which is used to test for thyroid functioning, has a rate constant for radioactive decay of k = 0.011 day−1.
(a) what are the half-lives 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 three half-lives?
(d) how much of a 1.00-mg sample of each isotope remains after 4 days?
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Americium-241 is used in smoke detectors. it has a first-order rate constant for radioactive decay o...
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