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20 August, 22:55

Time in years

How many grams of cobalt-60 will remain after two

half-lives?

1

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Answers (1)
  1. 21 August, 00:56
    0
    Answer: The radioactive isotope cobalt 60, which is used in radiation cancer therapy, has, for example, a half-life of 5.26 years. Thus after that interval, a sample originally containing 16 grams of cobalt 60 would contain only 8 grams of cobalt 60 and would emit only half as much radiation.
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