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[ I think I should have asked this many years ago when I was studying !!! However it will help me re-understand thermodynamics and entropy a bit, and may be good for others on the same path so... ]
Considering two portions of a liquid. Container A liquid is at a high temperature, container B is at a low temperature. The temperature difference could be used to drive a heat engine, so there is an calculable amount of energy E available that results from the difference in temperatures and heat contents.
Mixing the two (same volumes) liquids results in the temperature changing to a point somewhere between the starting values. If I simply assume the result is just the average, what has happened to the energy E ? So, I guess that assumption is wrong and the energy E is still present, the temperature will be higher than the simple average.
How is energy E then accounted for, and the temperature calculated ? I guess that is the whole gist of entropy !?
Considering two portions of a liquid. Container A liquid is at a high temperature, container B is at a low temperature. The temperature difference could be used to drive a heat engine, so there is an calculable amount of energy E available that results from the difference in temperatures and heat contents.
Mixing the two (same volumes) liquids results in the temperature changing to a point somewhere between the starting values. If I simply assume the result is just the average, what has happened to the energy E ? So, I guess that assumption is wrong and the energy E is still present, the temperature will be higher than the simple average.
How is energy E then accounted for, and the temperature calculated ? I guess that is the whole gist of entropy !?