n ideal gas whose adiabatic exponent equals is expanded according to the law p = V, where

Question:

n ideal gas whose adiabatic exponent equals γ is expanded according to the law p = αV, where a is a constant. The initial volume of the gas is equal to Vo, as a result of expansion the volume in-creases B times. Find:
(a) The increment of the internal energy of the gas;
(b) The work performed by the gas;
(c) The molar heat capacity of the gas in the process.