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[profitis]

Can I ask you a question @mark E? (-:

[MarkE]

Can I ask you a question @mark E? (-:

Obviously, you just did.

[profitis]

Right but here's another  question: if I take a piece zinc and a piece copper and shove them under vaccuum and contact them together..what kind of entropy change is taking place here? Does one piece cool down and the other heat up on contact?

[profitis]

I'm refering to a contact potential,s reversable thermodynamics btw @markE

[MarkE]

I'm refering to a contact potential,s reversable thermodynamics btw @markE

Those are two different things.
In order for a thermodynamic process to be fully reversible it must be able go either direction between two states without any external applied energy.  Do you assert that such a thing happens under the conditions you state with your copper and zinc strips?  If you do, then please identify the states and show that such a thing happens by experiment or some reputable reference.