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An ideal gas is enclosed in a cylinder with a movable piston on top of it. The piston has a mass of 8,000 g and an area of 5.00 cm2 and is free to slide up and down, keeping the pressure of the gas constant.(a) How much work is done on the gas as the temperature of 0.180 mol of the gas is raised from 15.0°C to 350°C?J

Avery Holden , 8 Years ago
Grade 12
anser 1 Answers
Rituraj Tiwari

Last Activity: 4 Years ago

First law of thermodynamics gives us the relation.
q=ΔU+w
w=q−ΔU
For a constant pressure process,
q=nCp​ΔT
ΔU=nCv​ΔT(always)
Hence,w=n(Cp​−Cv​)ΔT=nRΔT=0.2×8.314×(300−20)=466J

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