To model a neutralization step in wastewater treatment, a student mixes the following solutions in a constant-pressure calorimeter.

Solution	Volume	Concentration	Initial temperature
\(\text{HNO}_3\text{(aq)}\)	\(40.0\text{ mL}\)	\(1.50\text{ M}\)	\(21.00^\circ\text{C}\)
\(\text{NaOH(aq)}\)	\(50.0\text{ mL}\)	\(1.00\text{ M}\)	\(21.00^\circ\text{C}\)

The maximum temperature of the mixture is \(28.40^\circ\text{C}\). Assume that the volumes are additive, the density of the mixture is \(1.00\text{ g/mL}\), its specific heat capacity is \(4.18\text{ J/(g}\cdot^\circ\text{C)}\), and the calorimeter absorbs negligible heat. The reaction is

\(\text{HNO}_3\text{(aq)}+\text{NaOH(aq)}\rightarrow\text{NaNO}_3\text{(aq)}+\text{H}_2\text{O(l)}\)

What is the magnitude of the experimental enthalpy of neutralization per mole of \(\text{H}_2\text{O(l)}\) formed?