The half-life of radium-224 is about 3.6 d. What
Chapter 29, Problem 29.1(choose chapter or problem)
The half-life of radium-224 is about 3.6 d. What approximate fraction of a sample remains undecayed after two weeks? (a) 12 (b) 14 (c) 18 (d) 1 16 (e) 1 32
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