When 1.045 g Na2O is added to 50.0 mL of water at 25.0 ∘C in a calorimeter, the temperature of the water
increases to 54.4 ∘C.
Assuming that the specific heat of the solution is 4.18J/(g⋅∘C) and that the calorimeter itself absorbs a negligible amount of heat, calculate ΔH
ΔH in kilojoules/mol for the reaction
Express the change in enthalpy in kilojoules per mole.