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I won't even waste the time looking up actual numbers.

  • a mole of atoms of helium is about 4 grams, therefor 1 gram of helium is about 0.25 moles of helium atoms
  • a mole of atoms of uranium is about 238 grams, therefor 1 gram of uranium is about 0.0042 moles of uranium atoms

A gram of helium contains more atoms than a gram of uranium by about a factor of 60.

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