# How many C atoms are there in 0.502 mole of C?

Nov 9, 2015

$3.0231147 \times {10}^{24}$
The number of atoms in a single mole of any substance is defined by Avogadro's Number, a constant which is equal to $6.0221409 \times {10}^{23}$, so there are approximately $6.0221409 \times {10}^{23}$ atoms in a single mole of a substance.
Number of $C$ atoms $= 5.02 \times 6.0221409 \times {10}^{23} = 3.0231147 \times {10}^{24}$