Hydrogen peroxide, H2O2, is a water-soluble compound. The concentration of an aqueous hydrogen peroxide solution that is 3% by mass H2O2 is used as an antiseptic. When the solution is poured on a small cut in the skin, H2O2 reacts according to the balanced equation below. 2H2O2 2H2O O2 3. Determine the gram-formula mass of H2O2. 4. Calculate the total mass of H2O2 in 20.0 grams of an aqueous H2O2 solution that is used as an antiseptic. Your response must include both a numerical setup and the calculated result. 5. Identify the type of chemical reaction represented by the balanced equation.