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A mass of gas at an initial pressure of 28 bar, and with an internal energy of 1500kJ, is contained in a well-insulated cylinder of volume 0.06m3. The gas is allowed to expand behind a piston until its internal energy is 1400kJ; the law of expansion is pv2 = constant. Calculate: a. The work done; b. The final volume; c. The final pressure (with 6 significant digits).
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