Clarification on moles

[Sei Lam 3F]

If we have one mole of a molecule, say CO2 for example, does that mean there's 6.02214076 x 10^23 molecules of CO2? Or 6.02214076 x 10^23 atoms total? Thanks!

[Tala Hamdan 3B]

This means you have 6.02214076 x 10^23 molecules. For it to be the number of atoms, you have to multiply this value by the number of atoms per one mole of the molecule. In this case, per every mole of CO2, there are 3 atoms. So for one mole of CO2 there are 3 x 6.02214076 x 10^23 atoms.

[Katie L 2I]

By Avogadro's number, 1 mole = 6.02214076 x 10^23 molecules. You would need to consider each part of CO2 separately, and calculate separately for carbon and oxygen.