Using Avagadro's Constant:

Question 1

If we need to calculate the number of atoms of an element what do we do?

Answer 1

= calculate moles of element
= multiply moles x avagadro’s constant.

Question 2

If we need to calculate the number of molecules in a compound what do we do and atoms?

Answer 2

= calculate the moles
= calculate molecules by multiplying it by avagadros constant
= multiply number of molecules by the amount of atoms