ANSWERS: 1
  • One mole = Avogadro's Number = 6.02 x 10^23. The given number of atoms is 1.20x10^25 / 6.02x10^23 = 19.9 moles. The atomic weight of S is 32.06, meaning that one mole of sulfur has a mass of 32.06 grams. Thus (19.9 moles)(32.06 grams/mole) = = 638 grams.

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