To calculate this, we need to know the chemical formula for sulfuric acid, which is H2SO4. This formula tells us that each molecule of sulfuric acid contains 2 hydrogen atoms (H), 1 sulfur atom (S), and 4 oxygen atoms (O).

Since we are dealing with 1 mole of H2SO4, we need to multiply the number of oxygen atoms per molecule by Avogadro's number (6.022 x 10^23), which represents the number of particles in 1 mole.

4 O atoms/molecule x 6.022 x 10^23 molecules/mole = 2.409 x 10^24 O atoms

Therefore, there are 2.409 x 10^24 O atoms in 1 mole of H2SO4.