Bandages can be sterilized by exposure to gamma radiation from cobalt-60, which has ahalf-life of 5.27 y. How much of a 10.0-mg sample of cobalt-60 is left after one half-life?Two half-lives? Three half-lives?

Chemistry: Matter and Change
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ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
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Chapter24: Nuclear Chemistry
Section24.2: Radioactive Decay
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Bandages can be sterilized by exposure to gamma radiation from cobalt-60, which has a
half-life of 5.27 y. How much of a 10.0-mg sample of cobalt-60 is left after one half-life?
Two half-lives? Three half-lives?

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