L27A
        Quick review thermodynamic relation
         T-V diagram

L27B
        Example 11.7 determining properties using a
        fundamental function
        Generalized charts for enthalpy and entropy generalized
        compressibility chart

L27C
        Generalized charts for enthalpy and entropy generalized
        compressibility chart(cont.)
        Generalized enthalpy correlation chart
        Example 11.8 using the generalized enthalpy
        departure chart

L27D
        Example 11.9 using the generalized entropy departure
        chart