a 135 g sample of H2O at 85 degrees celcius is cooled. The water loses a total of 15 kJ of energy in the cooling process. What is the final

a 135 g sample of H2O at 85 degrees celcius is cooled. The water loses a total of 15 kJ of energy in the cooling process. What is the final temperature of the water? The specific heat of water is 4.184 J/g degrees Celcius. Please explain how to get this answer and what formula to use.