Although two bodies can have the same amount of "energy," "enthalpy," or "internal energy," they cannot have the same amount of "heat."
When two bodies' molecules have different kinetic energies, "heat" is the amount of energy that transfers from one to the other.
These kinetic energies are measured in terms of temperature.
Using the temperature change as an example, Q = m * c *.
The amount of heat transferred is the same if we take identical blocks of the same substance and heat them up to 25 C and 29 C, respectively. However, even though their final temperatures are different, the amount of heat transferred is the same.A thermodynamic system's internal energy and the product of its pressure and volume are added to form enthalpy, which is one of the system's properties. It is a state function that is frequently used to measure chemical, biological, and physical systems at a constant pressure that is conveniently provided by the sizable surrounding atmosphere. Because energy is being released from the system in the form of heat, this is an example of an exothermic reaction. Refrigerator compressors are a different application of enthalpy. Again, under the exact same conditions of constant pressure, a vaporization reaction is taking place here.
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