patrickgarrison51 patrickgarrison51
  • 13-02-2019
  • Chemistry
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one twelfth the mass of a carbon-12atom is used to define a.
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jessjessjes7 jessjessjes7
  • 13-02-2019

a weighted average of the masses of an element isotopes. One twelfth the mass of carbon-12 atom is used to define a. atomic mass unit.

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