Question

what is enthalpy? the total pressure of the system the total disorder of the system the total concentration of the system the total heat content of the system

Explanation:

Enthalpy is a thermodynamic property representing the total heat content of a system. It takes into account the internal energy of the system and the energy associated with its pressure - volume work. The total pressure of the system is related to pressure but not enthalpy. The total disorder of the system is entropy. The total concentration of the system is related to the amount of substances per unit volume and not enthalpy.

Answer:

the total heat content of the system