A perfect gas expands isothermally at 298 K from 20.00 dm° to 30.00 dm° against a constant external pressure of 200000 Pa. Calculate the heat exchanged with the surroundings Select one: 1. 8.13 kJ 2. -8.13 kJ 3. -2.00 kJ 4. 2.00 kJ 5. none of the other answers

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