Help please this is my midterm

Al. An aluminum pot of mass 97 kg contains 248 kg of water at 23.7 C. A heater supplies energy at the rate of 71,561 kW. How long does it take for the water (a) to reach the boiling point, and (b) to all have changed to steam? (CAI = 900 J/(kg Co); Cw = 4186 J/(kg Co); Ly = 22.6 x 10' J/kg). Present a DIAGRAM