You have one mole of a monoatomic van der Waals gas that undergoes a free expansion from 1.0 x 10-3 m³ to 2.0 × 10-3 m³. What is the gas's change in temperature? The van der Waals' constant a is 0.14 N m*/moľ², and the gas's molar heat capacity at constant volume is 12.47 J/(K mol).
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