An ideal gas whose adiabatic exponent equals is expanded so that the amount of heat transferred to

Question:

An ideal gas whose adiabatic exponent equals γ is expanded so that the amount of heat transferred to the gas is equal to the decrease of its internal energy. Find:
(a) The molar heat capacity of the gas in this process;
(b) The equation of the process in the variables T, V;
(c) The work performed by one mole of the gas when its volume increases η times if the initial temperature of the gas is To.