solve it details please!

1. (5 marks) An electric heating element is immersed in a tank. A solvent at 15C with a heat capacity 2.1J/gC is fed into the tank at a rate of 15kg/h. Heated solvent is discharged at the same flow rate. The tank is filled initially with 125kg cold solvent at 10C. The rate of heating the electric coil is 2000W. a. Write a differential equation for energy balance. ( 1 marks) b. Simplify the equations by inserting suitable values ( 1 marks) c. Solve using the SIMULINK ( 8 marks)