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A gas of 1kg mast is enpanded polytropicaly from an inilal forestume of 1300kPa and a temperahure of 250C ante it ocoupies a volume of

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A gas of 1kg mast is enpanded polytropicaly from an inilal forestume of 1300kPa and a temperahure of 250C ante it ocoupies a volume of 2m3 and has a temperahas of 374C. Take the gas conslant ft+0.28kJkgK. Calalate the following: 2.1 The fral presture after expansion 2.2. The index of eupanelon 2.3 The inital volume (9). (5) (3) 2.4 The work done during exearaien (4)

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