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MMLU-Pro / 9903 / A sample of gold is exposed to a beam of neutrons, and the reaction Au^197 + n =…

Problem

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

question

A sample of gold is exposed to a beam of neutrons, and the reaction Au^197 + n = Au^198 + \Upsilon absorbs 10^6 neutrons per second. Au^198 emits \beta-particles and has a half-life of 2.70 days. How many atoms of Au^198 are present after 2 days of continuous irradiation?

category

physics

options

  1. 1.45 x 10^11 atoms
  2. 1.55 x 10^11 atoms
  3. 1.50 x 10^11 atoms
  4. 1.65 x 10^11 atoms
  5. 1.20 x 10^11 atoms
  6. 1.40 x 10^11 atoms
  7. 1.35 x 10^11 atoms
  8. 1.60 x 10^11 atoms
  9. 1.25 x 10^11 atoms
  10. 1.75 x 10^11 atoms

src

stemez-Physics

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Source and history

upstream_id / Original problem ID
9903
task_id
93f81330-9168-5a8d-a1eb-810a785227b2
task_key
default--test--9903
task_revision_id
1
config / split
default / test

Official source

initial import