Question

what is heat content or enthalpy?​

Answer 1

$\huge\underline\mathfrak\red{Heya\:Mate}$

$\large\boxed{\fcolorbox{blue}{white}{!-----Answer-----!}}$

★ The energy stored within the substance or the system that is available for conversation into heat is called the heat content or enthalpy of the substance or the system.

Answer 2

When the change of state of a system is brought about at constant pressure, there will be a change in volume.

The heat transferred such a process is known as heat content or enthalpy and is denoted by H.

It may be defined as: H = E + PV.