How many atoms are in 0.53 moles of calcium?

There are 3.19 calcium atoms in 0.53 moles of calcium. Start with 0.53 moles and multiply it by (6.022x10^23)/1 mole. This will convert moles to atoms. That number is known as Avagadro’s number and it is used when converting moles to atoms/molecules. Hope this helped.