Joules per Kelvin (J/K) is the unit of measurement for entropy, which quantifies the amount of energy in a system that is not available to do work, often associated with the level of disorder within that system. This measurement connects energy transfer and temperature, highlighting how the unavailability of energy increases with greater disorder. The concept is essential for understanding thermodynamic processes, as it illustrates the relationship between energy, heat, and the natural tendency for systems to evolve towards greater entropy.
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