Question

14.3 10.0 L of an ideal diatomic gas at 2.00 atm and 275K are contained in a cylinder with a piston. The gas first expands isobarically to 20.0 L (step 1). It then cools at constant volume back to 275 K (step 2), and finally contracts isothermally back to 10.0 L (step 3).

a) Show the series of processes on a PV diagram.

b) Calculate the temperature, pressure, and volume of the system at the end of each step in the process. Indicate the p and V values on the PV diagram.

c) Compute the total work done by the gas on the piston during each step of the cycle in L-atm, and the total work done by the gas for one complete cycle.

d) Compute the heat added during each step of the cycle in L-atm, and the net heat added for one cycle. Compare the total work done with the net heat added.

e) Is this an engine or a refrigerator? If it is an engine, what is its efficiency; if it is a refrigerator, what is its coefficient of performance?

Answer #1

14.3 10.0 L of an ideal diatomic gas at 2.00 atm and 275K are
contained in a cylinder with a piston. The gas first expands
isobarically to 20.0 L (step 1). It then cools at constant volume
back to 275 K (step 2), and finally contracts isothermally back to
10.0 L (step 3). a) Show the series of processes on a pV diagram.
b) Calculate the temperature, pressure, and volume of the system at
the end of each step in...

10.0 L of an ideal diatomic gas at 2.00 atm and 275 K are
contained in a cylinder with a piston. The gas first expands
isobarically to 20.0 L (step 1). It then cools at constant volume
back to 275 K (step 2), and finally contracts isothermally back to
10.0 L (step 3).
a) Show the series of processes on a pV diagram.
b) Calculate the temperature, pressure, and volume of the system
at the end of each step in...

Please solve the following problems. You must show all work.
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a) How much heat was added to the
gas?
b) Now if 7000 J of heat is added to
the system and the piston is only moves 5.0 cm up, what is the
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temperature.
1. determine the amount of heat entering the system during the
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A positive answer means heat is added; a negative answer means
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2.)1.0 mol sample of an ideal monatomic gas originally at a
pressure of 1 atm undergoes a 3-step process as follows:
(i) It expands
adiabatically from T1 = 588 K to T2 = 389 K
(ii) It is compressed at
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(iii) It then returns to its
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A). Plot these processes on a PV diagram
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. A container has n = 3 moles of a monoatomic ideal gas at a
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