One mole of ideal gas expands isothermally from 2 atm to 1 atmin a cylindrical piston, which is surrounded by the atmosphere thatexerts a pressure of 1 atm. The piston is always in thermalequilibrium with the atmosphere, which is a reservoir at 300 K.During the expansion process, a friction force is exerted on thepiston and it varies in such a way that it almost always balancesthe forces acting on it. , so the piston moves slowly and withnegligible acceleration. Consider that the piston and cylinder aregood thermal conductors. Calculate: 1) The heat exchanged with theenvironment. 2) The change of entropy in the surroundings. 3) Thework done. 4) The change in entropy of the piston. 5) The totalentropy change.