How Much heat is required to change temperature of 1.50 kg of Copper from -20 C to 393 K?

Solution:

Q = m C T

Q = Quantity of heat lost or gained in J

C = Specific heat Capacity (J/Kg C)

T = Temperature change

Heat capacity of Copper = 3.9 x 102 J /Kg C

Converting 393 K to C , we get 120 C

Now change in temperature is = 120-(-20) = 140

Then Q = 1.5 x 3.9 x 102 x 140 = 81.9 KJ