1.5 mol of a perfect gas at 300 K is compressed reversibly and isothermally from a pressure of 1.01x10^5 N m^2 to 5.05x106 Nm^2. Calculate the amount of work done.

 

The heat of combustion of napthalene (C10H8(s)) at constant volume was measured to be 5133 kJ mol^1 at 298K. Calculate the value of enthalpy change (Given R = 8.314 JK^1 mol^1).