At by a thermally insulated piston which slides without friction in response to pressure differences on the two sides. initially on each side of the pistion there are 20 liters of a monatomic ideal gas at stp. heat is slowly supplied to the gas on the right side of the piston until its volume increases to 25 1l (a) find the final pressure and temperature of the gas on the left side of the piston (b) find the final pressure and temperature of the gas on the right side of the pisto: n hermally insulated container with rigid walls is divided into two parts