First Law of Thermodynamics Considering air as an ideal gas, can engineer a process by which a certain amount of air change from the thermodynamic state a to the final state b, as seen in the pressure versus volume diagram. According to the information provided by the diagram and knowing that Va = 0.070 m3, Vb = 0.110 m3, Pa = 1.0 × 105 Pa and Pb = 1.4 × 105 Pa. Answer: (a) The air temperature according to the process will decrease, increase or had it remained the same? (b) How much work will be done by air during the process?

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