A rigid, well-insulated tank contains air. A partition in

Chapter 6, Problem 6.63

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A rigid, well-insulated tank contains air. A partition in the tank separates 12 ft\(^{3}\) of air at 14.7 lbf/in.\(^{2}\) , 40\(^{\circ}\)F from 10 ft\(^{3}\) of air at 50 lbf/in.\(^{2}\) , 200\(^{\circ}\)F, as illustrated in Fig. P6.63. The partition is removed and air from the two sides mix until a final equilibrium state is attained. The air can be modeled as an ideal gas, and kinetic and potential energy effects can be neglected. Determine the final temperature, in \(^{\circ}\)F, and pressure, in lbf/in.\(^{2}\) Calculate the amount of entropy produced, in Btu/\(^{\circ}\)R.

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