Challenge Problem: Heat Engine A certain heat engine operates on the PV diagram below. It contains 3.21mol of a monatomic ideal gas. p(Pa × 105) a b 2.0 C ➤V(m³) 0.040 0.010 a. What temperature is the gas at state c? b. What temperature is the gas at state a? C. How much heat is added/removed from the gas over the path c-to-a? d. What is the pressure of state a? e. What is the temperature of state b? Find the work and heat for path a-to-b. g. Find the work and heat of path b-to-c. h. Find the efficiency of the engine. i. Would the engine be more, or less efficient if the gas were diatomic?

Physics for Scientists and Engineers
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Author:Raymond A. Serway, John W. Jewett
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Chapter18: Temperature
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Challenge Problem: Heat Engine
A certain heat engine operates on the PV diagram below. It contains 3.21mol of a monatomic
ideal gas.
p(Pa × 105)
a
b
2.0
C
➤V(m³)
0.040
0.010
a. What temperature is the gas at state c?
b. What temperature is the gas at state a?
C. How much heat is added/removed from the gas over the path c-to-a?
d. What is the pressure of state a?
e. What is the temperature of state b?
Find the work and heat for path a-to-b.
g. Find the work and heat of path b-to-c.
h. Find the efficiency of the engine.
i. Would the engine be more, or less efficient if the gas were diatomic?
Transcribed Image Text:Challenge Problem: Heat Engine A certain heat engine operates on the PV diagram below. It contains 3.21mol of a monatomic ideal gas. p(Pa × 105) a b 2.0 C ➤V(m³) 0.040 0.010 a. What temperature is the gas at state c? b. What temperature is the gas at state a? C. How much heat is added/removed from the gas over the path c-to-a? d. What is the pressure of state a? e. What is the temperature of state b? Find the work and heat for path a-to-b. g. Find the work and heat of path b-to-c. h. Find the efficiency of the engine. i. Would the engine be more, or less efficient if the gas were diatomic?
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