(a) Determine the maximum allowed partial pressure of water vapor in wet hydrogen (H2 + H2O) at 1 atm in which manganese (Mn) can be heated without oxidation occurring at 1100℃

Question 5 (a) Derive an expression for . in terms of the state variables, including I, P, S, V, and the measurable properties of the system, including the heat capacities, and C,, the isobaric thermal expansivity, a, and the isothermal compressibility, B. A is the Helmholtz free energy defined as U - TS.