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A cylinder of ideal gas is closed by an ...

A cylinder of ideal gas is closed by an 8kg movable piston of area `60cm^2`. The atmospheric pressure is 100kPa. When the gas is heated form `30^@C` to `100^@C`, the piston rises 20 cm. The piston is then fastened in the place and the gas is cooled back to `30^@C`. If `DeltaQ_1` is the heat added to the gas during heating and `DeltaQ_2` is the heat lost during cooling, find the difference.

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