Grams to Atoms

Grams to Atoms

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  • Yes actually, I would like to learn how you convert grams to atoms.
  • Hello there! Can I help you this fine evening?
  • Yes.
  • Ok. The first thing you do is divide the grams by the molar mass to get the moles of the substance. Got it?
  • Really! It's that simple!
  • After you get the moles of the substance you need to multiply the moles to Avogadro's number and you get the atoms!
  • Ok.
  • Yes! Now try a practice problem.
  • Well iron's atomic mass is 56 g/mol so I divide 24g by 56 g/mol and I get 0.429 moles. Now I multiply 0.429 moles by 6.022*10 to the 23 power to get 2.583 to the 23 power atoms as my answer!
  • How many atoms are there in 24g of iron (Fe)?
  • Yay! Now I know how to convert grams to atoms!
  • Correct! Good job!
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