A tank contains 50 litres of water at 20°C. An electrical heating element is switched on and the temperature increased to 100°C without boiling the water. 8. a) If the heat capacity of water is 4.2...

In a part, l found that Q=16800kJ

In b part Power=10.77kW/hr.

In c part l know, Latent heat= latent heat of vaporization(2260kJ/kg) × mass. But couldn't solve this part.

Extracted text: A tank contains 50 litres of water at 20°C. An electrical heating element is switched on and the temperature increased to 100°C without boiling the water. 8. a) If the heat capacity of water is 4.2 kJ/kg K and the density of water is 1000 kg/m², calculate the energy in kJ required to carry out this heating. Assume no heat loss to the surroundings. b) The heating operation takes 26 minutes. Assuming 100% heater efficiency, calculate the power of the heater in kW. The heater is left on for a further 30 minutes. If the latent heat of vaporisation of water is 2260 kJ/kg, calculate the mass of water vaporised. Again, assume no heat loss to the surroundings. c)