1. Find the number of moles:
* Molar mass of oxygen (O): 16.00 g/mol
* Moles of oxygen = (mass of oxygen) / (molar mass of oxygen)
* Moles of oxygen = 16.00 g / 16.00 g/mol = 1.00 mol
2. Use Avogadro's Number:
* Avogadro's Number: 6.022 x 10^23 atoms/mol
* Number of atoms = (moles of oxygen) x (Avogadro's Number)
* Number of atoms = 1.00 mol x 6.022 x 10^23 atoms/mol = 6.022 x 10^23 atoms
Therefore, there are 6.022 x 10^23 atoms in 16.00 g of oxygen.
