Cobalt-60 has a half-life of 5.24 years. (a) Find the mass that remains from a 100-mg sample
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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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