Problem 19.31Consider the following two-step process. Heat is allowed to flow out ofan ideal gas at constant volume so that its pressure drops from 2.2atm to 1.4 atm. Then the gas expands at constant pressure, from avolume of 5.9 L to 9.3 L, where the temperature reaches its originalvalue. (See figure(Figure 1)).Part ACalculate the total work done by the gas in the process.Express your answer using two significant figures.AEO?W =SubmitRequest AnswerPart BFigure1 of 1Calculate the change in internal energy of the gas in the process.P.μνα ΑΣφ?2.2 atmAEint =J1.4 atmSubmitRequest AnswerPart C5.9 L 9.3 LCalculate the total heat flow into or out of the gas.Express vour answer using two sianificant figuresP Search立 19.31Consider the following two-step process. Heat is allowed to flow out ofan ideal gas at constant volume so that its pressure drops from 2.2atm to 1.4 atm. Then the gas expands at constant pressure, from avolume of 5.9 L to 9.3 L, where the temperature reaches its originalvalue. (See figure(Figure 1)).Part CCalculate the total heat flow into or out of the gas.Express your answer using two significant figures.Q| =JSubmitRequest AnswerFigure1 of 1Part DO This amount of heat flows into the gas.2.2 atmThis amount of heat flows out of the gas.b.SubmitPrevious Answers1.4 atmCorrect5.9 L 9.3LVProvide FeedbackSearch

Given Data: Pa=2.2 atm Pb=Pc= 1.4 atm= 140000 Pa Va=Vb=5.9 L = 0.0059 m3 Vc=9.3 L = 0.0093 m3 Ta=TcPart A: For constant volume process: Wab=PdV=0 J as Va=Vb Wbc=Pb(Vc-Vb) = 140000(0.0093-0.0059) = 476 J So, total work done W=476 J Part B Here, Ta=Tc Change in internal energy Uc-Ua= m(Cv)(Tc-Ta)= 0 JPart C From 1st law of thermodynamics, total heat flow is Q=(Uc-Ua) + W = 0 + 476 Q= 476 J Part D Here, from sign convention of heat flow if heat flow is positive then amount of heat flows into gas.

Engineering

Mechanical Engineering

Problem 19.31 Consider the following two-step process. Heat is allowed to flow out of an ideal gas at constant volume so that its pressure drops from 2.2 atm to 1.4 atm. Then the gas expands at constant pressure, from a volume of 5.9 L to 9.3 L, where the temperature reaches its original value. (See figure(Figure 1)). Part A Calculate the total work done by the gas in the process. Express your answer using two significant figures. ? W = Submit Request Answer Part B Figure 1 of 1 Calculate the change in internal energy of the gas in the process. VO AEO ? 2.2 atm AEint = J b. 1.4 atm Submit Request Answer Part C 5.9 L 9.3 L V Calculate the total heat flow into or out of the gas

Problem 19.31 Consider the following two-step process. Heat is allowed to flow out of an ideal gas at constant volume so that its pressure drops from 2.2 atm to 1.4 atm. Then the gas expands at constant pressure, from a volume of 5.9 L to 9.3 L, where the temperature reaches its original value. (See figure(Figure 1)). Part A Calculate the total work done by the gas in the process. Express your answer using two significant figures. ? W = Submit Request Answer Part B Figure 1 of 1 Calculate the change in internal energy of the gas in the process. VO AEO ? 2.2 atm AEint = J b. 1.4 atm Submit Request Answer Part C 5.9 L 9.3 L V Calculate the total heat flow into or out of the gas

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

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Problem 19.31
Consider the following two-step process. Heat is allowed to flow out of
an ideal gas at constant volume so that its pressure drops from 2.2
atm to 1.4 atm. Then the gas expands at constant pressure, from a
volume of 5.9 L to 9.3 L, where the temperature reaches its original
value. (See figure(Figure 1)).
Part A
Calculate the total work done by the gas in the process.
Express your answer using two significant figures.
AEO
?
W =
Submit
Request Answer
Part B
Figure
1 of 1
Calculate the change in internal energy of the gas in the process.
P.
μνα ΑΣφ
?
2.2 atm
AEint =
J
1.4 atm
Submit
Request Answer
Part C
5.9 L 9.3 L
Calculate the total heat flow into or out of the gas.
Express vour answer using two sianificant figures
P Search
立

19.31
Consider the following two-step process. Heat is allowed to flow out of
an ideal gas at constant volume so that its pressure drops from 2.2
atm to 1.4 atm. Then the gas expands at constant pressure, from a
volume of 5.9 L to 9.3 L, where the temperature reaches its original
value. (See figure(Figure 1)).
Part C
Calculate the total heat flow into or out of the gas.
Express your answer using two significant figures.
Q| =
J
Submit
Request Answer
Figure
1 of 1
Part D
O This amount of heat flows into the gas.
2.2 atm
This amount of heat flows out of the gas.
b.
Submit
Previous Answers
1.4 atm
Correct
5.9 L 9.3L
V
Provide Feedback
Search

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