Which of the following is a balanced equation? PbO_(2)+underline (2)H_(2)arrow underline (2)Pb+H_(2)O underline (2)Na+underline (2)H_(2)Oarrow underline (3)NaOH+H_(2) CaCO_(3)arrow CaO+CO_(2) CS_(2)+underline (2)O_(2)arrow CO_(2)+underline (2)SO_(2)

The balanced equation is: Explanation:A balanced chemical equation is one in which the number of atoms of each element is the same on both sides of the equation. In the given options, the equation is balanced because the number of atoms of each element (carbon, sulfur, and oxygen) is the same on both sides of the equation.