(a) What is the activity, in millicuries. of a 0.500-g
Chapter 20, Problem 68AP(choose chapter or problem)
(a) What is the activity, in millicuries. of a 0.500-g sample of ? (This isotope decays by a-particle emission and has a half- life of 2.20 × 106 years.) (b) Write a balanced nuclear equation for the decay of .
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