How many atoms are in 36 mol Na?

To determine the number of atoms present in the given number of moles of sodium which has a chemical formula of Na, we multiply the number by the Avogadro's number, 6.022 x 10^23. That is,

number of atoms = (36 mol) x (6.022 x 10^23)

= 2.16792 x 10^25 atoms of Na