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MMLU-Pro / 3539 / A radioactive isotope, which is used in diagnostic imaging, has a half-life of…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

A radioactive isotope, which is used in diagnostic imaging, has a half-life of 6.0 hours. If a quantity of this isotope has an activity of 150 mCi when it is delivered to a hospital, how much activity will remain 24 hours after delivery? (mCi = microcuries)

category

chemistry

options

  1. 150 mCi
  2. 9.4 mCi
  3. 4.7 mCi
  4. 12.5 mCi
  5. 25 mCi
  6. 50 mCi
  7. 19 mCi
  8. 75 mCi
  9. 38 mCi
  10. 2.3 mCi

src

ori_mmlu-college_chemistry

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