Thermodynamic Process
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1. The figure shows a thermodynamic process followed by 150mg of helium.
a) Determine the pressure (in atm) of the gas at points 1, 2, and 3.
p1,p2,p3=________atm
b) Determine the temperature (in celsius) of the gas at points 1, 2, and 3.
T1,T2,T3=________ celsius
c) Determine the volume (in centimeters cubed) of the gas at points 1, 2, and 3.
V1,V2,V3=_________ centimeters cubed
d) How much work is done on the gas during each of the three segments?
W1->2,W2->3,W3->1=_____________ J
e) How much heat energy is transferred to or from the gas during each of the three segments?
Q1->2,Q2->3,Q3->1=______________J
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Solution Summary
This solution contains a detailed step-by-step explanation of how to tackle various thermodynamic problems.
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Please refer to attachment for diagram and proper formatting.
Solution:
At point 1 from the PV graph: Volume = V1 = 1000 cc = 1000 x 10-6 m3 = 10-3 m3, Temperature T1 = 273 + 133 = 406 K, Pressure = P1
At point 2: Volume = V2 = 1000 cc, Pressure P2 = 5P1, Temperature = T2
At point 3: Volume = V3, Pressure P3 = P1, Temperature T3 = T2 (as the two points lie on an isothermal)
As points 2 and 3 lie on an isothermal curve, applying the perfect gas equation:
P2V2 = P3V3
Substituting values: 5P1 x 1000 = P1 V3
V3 = 5000 cc or 5 x ...
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