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300 mL of a 0.694 M HCl aqueous solution is mixed with 300 mL of 0.347...

300 mL of a 0.694 M HCl aqueous solution is mixed with 300 mL of 0.347 M Ba(OH)2 aqueous solution in a coffee-cup calorimeter. Both the solutions have an initial temperature of 28.7 °C. Calculate the final temperature of the resulting solution, given the following information: H+(aq) + OH- (aq) → H2O(ℓ)       ΔHrxn = -56.2 kJ/mol Assume that volumes can be added, that the density of the solution is the same as that of water (1.00 g/mL), and the specific heat of the solution is the same as that for pure water, 4.184 J/(gK). 24.0 °C 4.66 °C 38.0 °C 47.3 °C 33.4 °C

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