Cobalt-60 has a half-life of 5.3 years. How many half-livesoccur after 21.2 years?

Chemistry: Matter and Change
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ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Chapter24: Nuclear Chemistry
Section: Chapter Questions
Problem 57A
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Cobalt-60 has a half-life of 5.3 years. How many half-lives
occur after 21.2 years?

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