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MMLU-Pro / 4651 / A sheet of gold 0.3mm thick and 5cm^2 in area with a density of 19.3g cm^-3 is…

Problem

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question

A sheet of gold 0.3mm thick and 5cm^2 in area with a density of 19.3g cm^-3 is exposed to a thermal neutron flux of 10^7 neutrons percm^2 per second. Given that the capture cross section of ^197Au for thermal neutrons is 99 barns, calculate the number of radioactive ^198 Au nuclei produced per second in the gold. Neglect any other neutron reaction with gold and take the atomic weight of gold to be 197.2.

category

chemistry

options

  1. 6.02 × 10^23 ^198 Au nuclei formed per second
  2. 9.15 × 10^8 ^198 Au nuclei formed per second
  3. 3.77 × 10^4 ^198 Au nuclei formed per second
  4. 2.50 × 10^9 ^198 Au nuclei formed per second
  5. 8.02 × 10^6 ^198 Au nuclei formed per second
  6. 5.89 × 10^22 ^198 Au nuclei formed per second
  7. 4.66 × 10^2 ^198 Au nuclei formed per second
  8. 1.23 × 10^5 ^198 Au nuclei formed per second
  9. 5 × 10^7 ^198 Au nuclei formed per second
  10. 7.85 × 10^10 ^198 Au nuclei formed per second

src

stemez-PhysicalChemistry

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