Problem: Which has more atoms: a 1-g sample of carbon-12 or a 1-g sample of carbon-13? Explain.

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We’re being asked which has more atoms: a 1-g sample of carbon-12 or a 1-g sample of carbon-13


Carbon-12 and carbon-13 are isotopes of carbon:

  • Both have the same number of protons but different number of neutrons
  • This means the mass per atom will differ where carbon-13 will be heavier.


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Which has more atoms: a 1-g sample of carbon-12 or a 1-g sample of carbon-13? Explain.

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