Problem 18.18 Part A Find the work done by a monatomic ideal gas as it expands f

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Problem 18.18

Part A

Find the work done by a monatomic ideal gas as it expands from point A to point C along the path shown in the figure(Figure 1) .

Express your answer using two significant figures.

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Part B

If the temperature of the gas is 240K at point A, what is its temperature at point C?

Express your answer using two significant figures.

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Part C

How much heat has been added to or removed from the gas during this process?

Express your answer using two significant figures.

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Figure 1 of 1

Explanation / Answer

a) work done by a monatomic ideal gas as it expands from point A to point C =area under curve=(200*2+0.5*2*400+0.5*2*200+200*2)*1000=1400000J=1.4*10^6 J (ans)

b)pressure same at A &C

so Vc/Va =Tc/Ta

10/2=Tc/Ta

Tc=1200 K (ans)

c)Net heat added=work +change in internal energy=1400000+ (P2V2 -P1V1)*3/2*R=21353600 J=

=2.135*10^7 J (ans)

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