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hadroneater
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Homework Statement
If 0.8kg of water at 100 celsius is mixed with 0.8kg of water at 0 celsius, is this process reversible?
Homework Equations
Entropy:
S = mcln(T_2/T_1)
The Attempt at a Solution
I've already calculated the entropy of the process, which is 81.1 J/K. But how do I know if it's reversible?