Question

How much heat is absorbed by a 57g iron skillet when its temperature rises from 6oC to 20oC?

Answer 1

Heat absorbed is given by multiplying the specific heat capacity with the mass of the substance and the change in temperature.
specific heat capacity of iron= 460.5 J/kg/k
therefore, heat = mcФ, where c is heat capacity, m is the mass of iron and Ф is change in temperature. Change in temperature is 14 (20-6), mass in kg (0.057 kg)
                       =460.5 × 0.057 x 14
                       = 367.48 joules
Hence, heat absorbed by iron will be 367.48 joules