Final answer:
To calculate the mass of an individual atom, divide the atomic mass by Avogadro's number.
Step-by-step explanation:
The mass of an individual atom can be calculated using the atomic mass and Avogadro's number. First, find the atomic mass of the element from the periodic table. Then, divide the atomic mass by Avogadro's number to get the mass of one mole of atoms. Finally, divide the mass of one mole by Avogadro's number again to get the mass of one atom.