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What fraction remains radioactive when used

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Reference no: EM131321594

Technetium-99 is a radioactive isotope with a half-life of 6 hours that is used in bone scans and other medical tests, decaying by gamma-ray emission. A hospital technician prepares a sample of technetium-99 12 hours before its use.

  • What fraction remains radioactive when used?
  • What fraction remains in the patient's body after 24 hours?

Reference no: EM131321594

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