Heat and Thermodynamics

The specific heat capacity of a substance is temperature dependent and is given by the formula C=kT, where k is a constant of suitable dimensions in SI units, and T is the absolute temperature. If the heat required to raise the temperature of 1 kg of the substance from −73∘C to 27∘C is nk, the value of n is _________.
[Given: 0K=−273∘C.]