Grade 12 Chemistry Studying Please answer clearly, quickly and neatly Thank you

If you used a standard calorimeter with 1900g of water, and observed an decrease in water temperature of 8.25 degrees Celsius, the specific heat capacity of water is 4.18 J/gC a) was the reaction endothermic or exothermic (explain how you know and what it implies about the reactants and products)? b) how much energy was released/absorbed