What is entropy?

It is a measure of the disorder in a closed system.
It is a measure of system's size
Both answers are correct
None of above answers
It is a measure of the disorder or randomness in a closed system. The second law of thermodynamics states that if isolated thermodynamic system spontaneously evolves into another state of equilibrium, its entropy will always increase. The term was invented by Rudolf Clausius.
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Władysław Pękala
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