A 46.6-g sample of warm water was combined with a sample of liquid nitrogen in a Styrofoam cup calorimeter. The liquid nitrogen sample rapidly evaporated, leaving only cool water in the calorimeter. Careful temperature measurements showed that the water cooled from an initial temperature of 74.60°C to a final temperature of 8.50°C. Calculate the amount of heat released by the water. Express your answer in units of kilojoules.