9.16. One kind of thermodynamic diagram that is useful in engineering problems is the P–H diagram, in which the x-axis is molar enthalpy and the y-axis is pressure. (a) Several kinds of iso-lines can be drawn in such a diagram, including isotherms (constant temperature), isentrops (constant entropy), and isochores (constant molar volume). For each of these three cases, find expressions for the slope of these lines on a P–H diagram in terms of measurable properties. (b) Find expressions for these slopes for the ideal monatomic gas, in terms of T and P. Explain on physical grounds any unusual results

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9.16. One kind of thermodynamic diagram that is useful in engineering problems is the P–H diagram, in which the x-axis is molar enthalpy and the y-axis is pressure.
(a) Several kinds of iso-lines can be drawn in such a diagram, including isotherms
(constant temperature), isentrops (constant entropy), and isochores (constant molar volume). For each of these three cases, find expressions for the slope of these lines on a P–H diagram in terms of measurable properties.
(b) Find expressions for these slopes for the ideal monatomic gas, in terms of T and P. Explain on physical grounds any unusual results

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