Answer: Cobalt-60 has a half-life of 5.24 years. (a) Find
Chapter 7, Problem 12(choose chapter or problem)
Cobalt-60 has a half-life of 5.24 years. (a) Find the mass that remains from a 100-mg sample after 20 years. (b) How long would it take for the mass to decay to 1 mg?
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