Enthalpy Is a Measurement of Energy in a Thermodynamic System $\mathrm{H}$

Multiple Choice

Enthalpy is a measurement of energy in a thermodynamic system. The enthalpy $\mathrm{H}$ of a homogeneous system is related to the internal energy $U$ of the system, the pressure $p$ of the system, and the volume $V$ of the system through the equation $\mathrm{H}=\mathrm{U}+\mathrm{pV}$ . Solve the equation for the internal energy in terms of the other variables.

A) $\mathrm{U}=\mathrm{H}-\mathrm{pV}$

B) $V=\frac{H+p}{U}$

C) $U=\frac{H-p}{V}$

D) $\mathrm{V}=\mathrm{H}+\mathrm{pU}$