Question

How many moles are in a sample of Sodium that contains 1.806 x 1024 atoms?

Answer 1

Answer: 3 moles Na

Explanation: To find the number of moles of Na, divide the number of atoms of Na with the Avogadro's Number.

1.806x10²⁴ atoms Na x 1 mole Na / 6.022x10²³ atoms Na

= 2.99 or 3 moles Na