Map A cylinder with a moveable piston inside it holds a volume of air of 0.115 m

Question

Map A cylinder with a moveable piston inside it holds a volume of air of 0.115 m3 at a pressure of 25.3 kPa. The pison inside moves, changing the volume to 0.915 m*, although the temperature of the gas does not change. (See the diagram at right.) 30 20 Answer the three questions below, using three significant figures. 10 Part A: This gas process would be classified as what? (Pick the correct answer.) 0.5 O O O L.0 An isochoric process An isothermal process An adiabatic process An anachronistic process An isobaric process ITn O Part B: Consider any work or heat flow occuring with this process. (Pick all the statements that are correct.) There must be heat entering the gas somehow There must be heat leaving the gas somehow There is no heat entering or leaving the gas. Something is performing work on the gas The gas is performing work somehow There is no work involved in this process.

Explanation / Answer

from the curve :

P V = constant

from gas equation, P V = n R T = cvonstant

that means T is constant

so isothermal process. .............Ans

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Volume is increasing hence gas is performing work somehow.

there must be heat enetring the gas somehow.

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P V = constant

P1 v1 = P2 V2

(25.3 kPA) (0.115) = Pe ( 0.915)

PF = 3.18 kPa

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