*** 30. An isothermal process is one in which a system remains at constant temperature while its other parameters change. Isothermal processes typically occur when the system is in ther- mal contact with a heat reservoir at constant temperature (like the air in a large room) that can absorb or supply heat to the system in question. a) If a gas is compressed isothermally from an initial 5 x 10-3 m³ volume and 3 × 10° Pa pressure to a final volume of 2.5 x 10-³ m², what will be its final pressure? b) Will the internal energy of the gas change during an isothermal process? Explain. c) If it required 104 J of work to compress the gas in part (a), will heat have been added to the gas or lost from it, and by what amount?

*** 30. An isothermal process is one in which a system remains at constant temperature while its other parameters change. Isothermal processes typically occur when the system is in ther- mal contact with a heat reservoir at constant temperature (like the air in a large room) that can absorb or supply heat to the system in question. a) If a gas is compressed isothermally from an initial 5 x 10-3 m³ volume and 3 × 10° Pa pressure to a final volume of 2.5 x 10-³ m², what will be its final pressure? b) Will the internal energy of the gas change during an isothermal process? Explain. c) If it required 104 J of work to compress the gas in part (a), will heat have been added to the gas or lost from it, and by what amount?