The ideal gas equation for real gases:
, where P is the gas pressure, V is the volume of the gas, n is the number of moles of the gas, R is the gas constant, and T is the absolute gas temperature.
Change in the gas internal energy:
Work done by the gas:
, where ΔV= V2 - V1.
The temperature of the monoatomic gas at the different points can be found from the ideal gas equation:
At Point 1:
T1 = P1V1/nR
From the graph, we substitute as follows:
T1 = (4)(101.3 × 103)(800 × 10-6)/(0.1)(8.31) = 390.1 K
0.10 mol of a monatomic gas follows a process shown in the figure.
1. How much energy is transferred to or from the gas during process 2 to 3?
2. What is the total change in thermal energy of the gas?
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