Determine molar heat capacity at constant volume

Question

Solve the following problem:

The molar heat capacity at constant volume of a metal at low temperatures varies with the temperature according to the equation

Cv/n = (124.8/Θ)³ T³ + γT,

where Θ is the Debye temperature, ϒ,is a constant, and C_v/n is measured in units of m_J jmol· K. The first term on the left is the contribution attributable to lattice vibrations and the second term is due to the contribution of free electrons.

For copper, Θ is 343 K and, is 0.688 m.l/mol K². How much heat per mole is transferred during a process in which the temperature changes from 2 to 3 K?