Internal energy

The association of energy with random molecules who move in disordered motion is known as internal energy.

Specific heat

Every matter has a certain temperature that is related to that mass. The amount of heat that is required to increase the temperature of a mass by one degree Celsius is known as specific heat. The heat amount is calculated on the basis of per unit mass.


A system’s total heat content (equivalent) thermodynamic quantity = enthalpy

As per this, it is the result of the sum of volume and pressure,and a system’s internal energy.

Its equation is depicted as,



  • PV is pressure and volume
  • U is internal energy
  • H is enthalpy


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