The addition of hydroiodic acid to a silver nitrate solution precipitates silver iodide according to the reaction:

AgNO3(aq)+HI(aq)→AgI(s)+HNO3(aq)

When 50.0 mL of 5.00×10⁻²M  AgNO3 is combined with 50.0 mL of 5.00×10⁻²M HI in a coffee-cup calorimeter, the temperature changes from 22.40 ∘C to 22.91∘C.

Part A

Calculate ΔHrxn for the reaction as written. Use 1.00 g/mL as the density of the solution and Cs=4.18J/(g⋅∘C) as the specific heat capacity of the solution.

Express the energy to two significant figures and include the appropriate units.