When 1.00 L of 2.00 M Na2SO4 solution at 30.0°C is added to 1.80 L of 0.700 M Ba(NO3)2 solution at 30.0°C in a calorimeter, a white solid (BaSO4) forms. The temperature of the mixture increases to 41.8°C. Assuming that the specific heat capacity of the solution is 6.37 J/°C·g and that the density of the final solution is 2.00 g/mL, calculate the enthalpy change per mole of BaSO4 formed.
ΔH = kJ/mol