Safety factors (additional nutrient allowances) are added to ration specifications to insure
that nutrients meet or exceed the minimum requirement of the animal.
A. True B. False
A
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Answer the following statement(s) true (T) or false (F)
A. For a pure component, a cubic equation of state has three molar volume roots. However, for a binary mixture, a cubic equation of state will have four molar volume roots, since the number of components has increased by one. B. If one models the vapor-phase of a mixture as an ideal solution, this means that the mixture fugacity coefficient of component i will be equal to the pure component fugacity of component i at the mixture temperature and pressure. C. The van der Waals one-fluid mixing rule requires that the mixture parameters are the same in both the liquid and vapor phases. D. In modeling vapor-liquid equilibrium using the gamma-phi approach, you can disregard the effect of Poynting correction factor. E. None of the above are true.
In a one-year-later replacement analysis, if all estimates are still current and the year is nD, the action that should be taken is: (choose one)
(a) Keep the defender 1 more year (b) Replace the defender with the challenger (c) Look for a new challenger and calculate its AW (d) Keep the defender until its market value is equal to the estimated salvage value of the challenger
The term "real" as opposed to "nominal" means that economists are making adjustments
What will be an ideal response?
1.5 kg of air is initially at 200 kPa and 30oC in an expandable container. The air is heated so that it expands following the relationship PV1.2 = constant. The container also holds a fan which adds a total of 50 kJ of work to the system during the process. The pressure at the end of the process is 100 kPa.
(a) Determine the final volume of the air, the final temperature, and the amount of heat transfer during the process. (b) Develop a computer model for this problem, and plot the final volume, final temperature, and the amount of heat transfer during the process for final pressures ranging between 50 kPa and 190 kPa. Given: Air; m = 1.5 kg; P1 = 200 kPa; T1 = 30oC = 303 K; Wrs = -50 kJ; P2 = 100 kPa; PV1.2 = constant. Assume: ?KE = ?PE = 0. Air is an ideal gas (R = 0.287 kJ/kg-K). What will be an ideal response?