To determine the number of oxygen atoms present in 16 g of O3 (ozone), we need to use the concept of Avogadro's number and the molar mass of ozone.
The molar mass of ozone (O3) can be calculated by adding up the atomic masses of its constituent elements: three oxygen atoms (O).
The atomic mass of oxygen (O) is approximately 16 grams per mole. Therefore, the molar mass of ozone (O3) is:
Molar mass of O3 = (3 × atomic mass of O) = (3 × 16 g/mol) = 48 g/mol
Now, we can calculate the number of moles of ozone in 16 g:
Number of moles = Mass / Molar mass Number of moles = 16 g / 48 g/mol = 0.333 moles
Since one mole of ozone contains three moles of oxygen atoms, we can multiply the number of moles by the number of oxygen atoms in one mole:
Number of oxygen atoms = Number of moles × Avogadro's number × Number of oxygen atoms per molecule Number of oxygen atoms = 0.333 moles × 6.022 × 10^23 atoms/mol × 3 atoms = 5.43 × 10^23 oxygen atoms
Therefore, there are approximately 5.43 × 10^23 oxygen atoms in 16 g of ozone (O3).