Question

A technician needs to determine the amount of energy required to increase the temp. of a vat containing 12 kg of water. The water enters the vat from the water mains at a temp. of 15 deg C. The technician knows that the final temp. required is
90 deg C. How much energy is required?


Show work please.

Answer 1

change in temp = 90 - 15 = 75 deg C

heat in = mass * specific heat * change in temp

= 12 kg * specific heat * 75 deg C

I do not know specific heat in Joules or calories or kilocalories or whatever you are using in your class / kilogram deg C