A sample of Tl-201 has an initial decay rate of 5.88 ×
Chapter 19, Problem 50E(choose chapter or problem)
A sample of Tl-201 has an initial decay rate of 5.88 x 104/s. How long will it take for the decay rate to fall to 287/s? (Tl-201 has a half-life of 3.042 days.)
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