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Ankit Shukla Grade:
        

a gas is enclosed in a vessel of volume V at a pressure P.it is being pumped out of the vessel by means of a piston pump witha stroke volume V/100 . What is the final pressure in the vessel after n strokes of the pump ?


Assume no change in temperature during pumping out of gas .

7 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points
										

Dear Ankit


PV=NRT


N is the number of molecile of gas initially


given T=constant


V is also constant


so


P/N =constant


after one stroke molecules of gas remain in cylender is N(1-1/100)


after 2 stroke molecules of gas remain in cylender is N(1-1/100)2


after n stroke molecules of gas remain in cylender is N(1-1/100)n


so P/N =P'/N(1-1/100)n


or P'=P(1-1/100)n





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Badiuddin

7 years ago
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