KenpoKid
KenpoKid KenpoKid
  • 09-05-2017
  • Chemistry
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A radioactive isotope has a half-life of 3 hours. If a scientist has 30 grams of the isotope, how much is left after 15 hours

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adrianpoptart22 adrianpoptart22
  • 09-05-2017
it has 30 minutes left
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