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MMLU-Pro / 4368 / A chemist is given an unknown element X. He finds that the element X has an…

Problem

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question

A chemist is given an unknown element X. He finds that the element X has an atomic weight of 210.197amu and consists of only two isotopes, ^210X and ^212X. If the masses of these isotopes are, respectively, 209.64 and 211.66amu, what is the relative abundance of the two isotopes?

category

chemistry

options

  1. 60.40% and 39.60%
  2. 90% and 10%
  3. 72.42% and 27.58%
  4. 50% and 50%
  5. 65% and 35%
  6. 85% and 15%
  7. 55.55% and 44.45%
  8. 80% and 20%
  9. 30% and 70%
  10. 75.58% and 24.42%

src

stemez-Chemistry

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Source and history

upstream_id / Original problem ID
4368
task_id
4c3316e4-b910-5e0f-909e-04fc74c3eae9
task_key
default--test--4368
task_revision_id
1
config / split
default / test

Official source

initial import