ANSWERS: 1
  • The basic principle is that one mole = Avogadro's Number = 6.02 x 10^23, and 1 mole x 1 amu (atomic mass units, now better known as Daltons) = 1 gram. You sometimes hear the mass of a molecule given as its 'gram molecular weight'. Thus one mole of carbon atoms weighs 12 grams. So 2 grams = (2/12)(6.02x10^23) atoms.

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