4.51 x 10^22 atoms of zinc are how many moles of zinc?

Answer 1

Since we know we the number of atoms of zinc there are, we can determine the number of moles using Avogadro's number:

(4.51 x 10²² Zn atoms) x (1 mol Zn/(6.022 x 10²³ Zn atoms)) =

0.075 mol Zn