Molecular H2SO4 refers to the compound sulfuric acid. It is an inorganic acid composed of hydrogen (H), sulfur (S), and oxygen (O) atoms. Sulfuric acid has a chemical formula H2SO4, indicating that it consists of two hydrogen atoms (H), one sulfur atom (S), and four oxygen atoms (O). The presence of two hydrogen atoms in the formula signifies that sulfuric acid is a diacid, meaning it can donate two hydrogen ions (H+) in a chemical reaction. Sulfuric acid is a highly corrosive and strong acid commonly used in various industrial processes, laboratory applications, and as a reactant in chemical synthesis.