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4. A quantity of an ideal gas occupies 15 litres at 15 atm and 140 K. Calculate: i. the final volume of the system

4. A quantity of an ideal gas occupies 15 litres at 15 atm and 140 K. Calculate: i. the final volume of the system [10 marks] ii. the work done by the system [15 marks] if the system undergoes a reversible isothermal expansion to 3 atmospheres.

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