A cylindrical vessel with a diameter of 28 cm contains 20 g of nitrogen, compressed by a piston on which lies a mass of 75 kg. Gas temperature 17 °C. How much work will the gas do if it is heated to 250°C? How much heat should be supplied to it? How much will the load lift? The process is considered isobaric, heating of the vessel and external pressure are neglected.

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