In a constant‑pressure calorimeter, 70.0 mL70.0 mL of 0.300 M Ba(OH)20.300 M Ba(OH)2 was added to 70.0 mL70.0 mL of 0.600 M HCl.0.600 M HCl. The reaction caused the temperature of the solution to rise from 21.43 ∘C21.43 ∘C to 25.52 ∘C.25.52 ∘C. If the solution has the same density and specific heat as water (1.00 g/mL1.00 g/mL and 4.184J/g⋅°C,)4.184J/g⋅°C,) respectively), what is Δ?ΔH for this reaction (per mole H2OH2O produced)? Assume that the total volume is the sum of the individual volumes.

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