Closed adiabatic system

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Kelsey Ouyang 3H
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Closed adiabatic system

Postby Kelsey Ouyang 3H » Wed Jan 20, 2016 10:36 am

If adiabatic means that the walls of the system is thermally insulated, then would a closed adiabatic system, which has delta U=w, just be an isolated system?

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Re: Closed adiabatic system

Postby 704628249 » Wed Jan 20, 2016 12:09 pm

No. In isolated systems, delta U= 0 because no heat can be transferred from the system and the environment and no work can be done on the system. q=0 and w=0

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Re: Closed adiabatic system

Postby Chem_Mod » Wed Jan 20, 2016 4:21 pm

Adiabatic means no heat flow. Therefore, in this process q=0, not delta U. Thus deltaU=w. It is the other way (delta U=0) for isothermal process.

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