In a constant‑pressure calorimeter, 65.0 mL of 0.860 M H 2 SO 4 was added to 65.0 mL of 0.400 M NaOH . The reaction caused the temperature of the solution to rise from 21.49 ∘ C to 24.21 ∘ C. If the solution has the same density and specific heat as water ( 1.00 g / mL and 4.184 J / ( g ⋅ °C), respectively), what is Δ H for this reaction (per mole of H 2 O produced)? Assume that the total volume is the sum of the individual volumes.