Assuming you are talking about sulfuric acid, there are four oxygen atoms.
Sulfuric acid, H2SO4, has 7 atoms in each molecule: 2 H (hydrogen), 1 S (sulfur), and 4 O (oxygen).
We know from looking at the molecular formula that one mole of molecules of H2SO4 contains 2 moles of atoms of hydrogen, 1 mole of atoms of sulfur and 4 moles of atoms of oxygen.
The subscripted number following an element tells you how many atoms of that element are in that molecule. H2SO4 -> (2) hydrogen atoms, (1) sulfur atom, and (4) oxygen atoms.
There are 7 atoms - 2 are hydrogen, 4 are oxygen, and 1 is sulphur (or 'sulfur' in American).
The molecular formula for sulfuric acid is H2SO4. This shows that each molecule contains exactly 4 oxygen atoms. Therefore, 0.750/4 or 0.1875 moles of sulfuric acid contain 0.750 moles of oxygen atoms.
There are seven atoms in a molecule of Sulfuric Acid.
1
There are 2 oxygen atoms in 1 molecule of oxygen.
One molecule of Oxygen contains two atoms.
1 mole of Sulphuric acid has : 12.044 x 1023 atoms of Hydrogen 6.022 x 1023 atoms of Sulphur 24.088 x atoms of oxygen.
All the letters in the formula should be capitalized, and the formula shows that there are two hydrogen atoms, one sulfur atom, and 4 oxygen atoms in each molecular unit, for a total of 7 atoms.
ONE oxygen molecule (O2) contains two atoms of oxygen (O).