Which equivalence factor should you use to convert from 4.25 moles of al to atoms of al?

(1 atom al/4.25 mol al)

(6.02 x 1023 atoms al/1 mol al)

(6.02 x 1023 atoms al/4.25 mol)

(4.25 mol al/6.02 x 1023 atoms al)

Avogadro's number is 1 mol  = 6.02 * 10^23 elements

It means that 1 mol of atoms is 6.02 * 10^23 atoms

1 mol of atoms = 6.02 * 10^23 atoms

From there, if you divide both sides by 1 mol of atoms, you get

1 = 6.02 * 10^23 atoms / 1 mol of atoms.

That means, that to pass from a number of moles of atoms to number of atoms you have to multipby by the conversion factor

          6.02*10^23  atoms Al/ 1 mol Al

That is the second option of the list.

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