Specific heat capacity
In thermodynamics, the specific heat capacity of a substance is the heat capacity of a sample of the substance divided by the mass of the sample. Informally, it is the amount of energy that must be added, in the form of heat, to one unit of mass of the substance in order to cause an increase of one unit in temperature. The SI unit of specific heat is joule per kelvin and kilogram, J/(K kg). For example, at a temperature of 25 °C, the heat required to raise the temperature of 1 kg of water by 1 K is 4179.6 joules, meaning that the specific heat capacity of water is 4179.6 J·kg−1·K−1.
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