Question

How much heat energy is necessary to raise the
temperature of skg of water from 20°C to 100°c
[c= lkcal/kg°c​

Answer 1

Answer:

Quantity of heat required to raise 5 kg of water from 20 0C to 1000C is given by the formula:Q=m×c×ΔT(Q is usually used to symbolize that heat required in a case like this.) For water, the value of . C is 4.186Jg°C.So,Q=750×4.186×85=266858J=266.858kJDT = temperature difference =100-20=80 0C.