Calcium metal reacts with hydrochloric acid according to the balanced equation:

Ca(s) + 2 HCl (aq) → CaCl₂ (aq) + H₂ (g)

A 0.150 g sample of Ca metal is combined with enough HCl to make 100.0 mL of solution in a coffee-cup calorimeter. The calcium reacts and the temperature of the solution rises from 23.5 °C to 25.4 °C. Find ΔH_rxn for the reaction. Use 1.00 g/mL as the density of the solution and C_s,soln = 4.18 J/g °C as the specific heat capacity of the solution.