a) Find the work the external agent does on the gas in the process. No ext. agent b) Find the heat exchanged by the gas and indicate whether the gas takes in or gives up heat. Assume ideal gas behavior
a) Find the work the external agent does on the gas in the process. No ext. agent b) Find the heat exchanged by the gas and indicate whether the gas takes in or gives up heat. Assume ideal gas behavior
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Transcribed Image Text:1. Two moles of helium gas are placed in a cylindrical container with a piston. The gas is at room
temperature 23 °C and under a pressure of 2.9.105 Pa. When the pressure from the outside is
decreased, while keeping the temperature the same as the room temperature, the volume of the gas
doubles. Use that the gas constant R= 8.31 J/(mol K).
Think: What kind of process is this? Isobaric, isothermal, adiabatic, isochoric or non-quasi-static?
(a) Find the work the external agent does on the gas in the process.
W
ext. agent
=
(b) Find the heat exchanged by the gas and indicate whether the gas takes in or gives up heat.
Assume ideal gas behavior.
Q=
Q is realeased by gas
Q is absorbed by the gas
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