Exothermic and endothermic reactions

In a calorimetry experiment, 50.0 cm³ of 1.00 mol/dm³ hydrochloric acid is mixed with excess solid sodium carbonate in an insulated cup. The temperature of the solution rises from 25.0 °C to 31.8 °C. Assume the total mass of solution is 50.0 g and its specific heat capacity is 4.2 J/(g·°C).

What is the heat change of the solution?