Question

What amount of heat is required to raise the temperature of 5 kg of water through 20°C? ​

Answer 1

419,000 Joules(J) or 419 kilojoules (kJ)

Step-by-step explanation:

The mount of heat energy required to raise the temperature of water of mass m kg through Δt degrees centigrade is given by

q = mcΔt

where c is the specific heat of water = 4190 Joules/(kg*°C)

Substituting these values we get

q = 5 x 4190 x 20 = 419,000 Joules(J) = 419 kilojoules (kJ)