If you have Chemistry textbook, go into the section "Calorimetry" for this specific problem.
q = ms Δ t (equation for calculating the heat change)
q = (71.0g) (4.181 J/g C) (125 C - -22 C)
q = (71.0g) (4.184 J/g C) (125 C + 22 C)
q = (71.0g) (4.184 J/g C) (147 C)
q = 43668.408 J
q = 43.7 kJ
I hope you find it and get it.