4. Aqueous nitric acid reacts with barium hydroxide to form water and salt. In a simple calorimeter, a 145.00 mL sample of 0.431 mol/L nitric acid solution is mixed with 60.00 mL of excess barium hydroxide solution. During the reaction, there is a rise in temperature by 4.52 °C. Calculate the molar enthalpy change for the above reaction. SHOW ALL YOUR WORK