Question

How many moles are in `1.56 x 10^23` atoms of silver (Ag)?

Answer 1

0.259 mol

Explanation:

All elements, regardless of what element they are, always have
6.02 x `10^23` number of atoms in one mole.

Hence,

6.02 x `10^23` ---> 1 mol

1.56 x `10^23` ---> `(1.56 * 10^23)/(6.02*10^23) *1` = 0.259 mol (3 significant figures)