A sample of gas, initially with a volume of 1.0 L, undergoes a thermodynamic cycle. Find the work done by the gas on its environment during each stage of the cycle described below. (Enter your answers in J.)
(a)
First, the gas expands from a volume of 1.0 L to 6.0 L at a constant pressure of 7.0 atm.
-5.654e5
Incorrect: Your answer is incorrect.
How is the work on the environment related to pressure and change in volume? Be careful with signs. J
(b)
Second, the gas is cooled at constant volume until the pressure falls to 1.5 atm.
0
Correct: Your answer is correct.
J
(c)
Third, the gas is compressed at a constant pressure of 1.5 atm from a volume of 6.0 L to 1.0 L. (Note: Be careful of signs.)
759,937.5
Incorrect: Your answer is incorrect.
How is the work on the environment related to pressure and volume change? Be careful with signs. J
(d)
Finally, the gas is heated until its pressure increases from 1.5 atm to 7.0 atm at a constant volume.
0
Correct: Your answer is correct.
J
(e)
What is the net work done by the gas on its environment during the complete cycle described above?
-58700
Incorrect: Your answer is incorrect.
How is the net work related to the work during each process of the cycle, as found in parts (a) through (d)? Be careful of signs, and remember to find the work by the gas on the environment, not the work on the gas. J
