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6. What happens to the internal energy of a gas during:(a) An isothermal expansion (b) An adiabatic expansion

Answer»

For isothermal expansion, Theirinternal energychanges with changeinpressure, even if temperature is constant.Foran idealgas,inanisothermal process, Δ U = 0 = Q − W , so . Theinternal energyis a state function dependent on temperature. Hence, theinternal energychange is zero.



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