Final answer:
When we have 3 molecules of H₂SO₄ (sulfuric acid), by multiplying the number of molecules by the number of oxygen atoms per molecule (4), we find that there are a total of 12 oxygen atoms.
Step-by-step explanation:
The question 'Give the total number of oxygen atoms indicated by 3H₂SO₄?' refers to a basic stoichiometry problem in chemistry that involves determining the total number of atoms of a specific element within a given chemical formula. The formula H₂SO₄ represents sulfuric acid, which contains 4 oxygen atoms per molecule. When we have 3 molecules of H₂SO₄, we simply need to multiply the number of molecules by the number of oxygen atoms in each formula unit.
3 molecules of H₂SO₄ × 4 oxygen atoms per molecule = 12 oxygen atoms total.