At a pressure of 105 Pa, 0.2 mole of diatomic gas occupies a volume of 10 liters. The gas is isobarically compressed to a volume of 4 liters, then compressed adiabatically, after which the gas expands isothermally to its initial volume and pressure. Construct a graph of the process in coordinates p, V. Find: the work done by the gas in one cycle; temperature, pressure and volume at characteristic points of the process; the amount of heat received by the gas from the heater and transferred by the gas to the refrigerator, as well as the thermal efficiency of the cycle.
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