Equation 14.73, shown below, accounts for system pressures that are different from the reference pressure. Which of the following correctly describes the derivation of the equation?
A. Ideal gas behavior is assumed for the system
B. The effect of pressure was quantified using Poynting correction
C. The Peng Robinson equation of state was used to calculate fugacity
D. The effect of pressure was quantified using Raoult’s Law
E. None of these
E. Correct. The derivation used “ideal gas at pressure P0” as a reference state, and required no other assumptions or approximations. However, assumptions and approximations are often applied later, in expressing the fugacity coefficients for the case at hand.
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Answer the following statements true (T) or false (F)
1. From the user's viewpoint, the difference between MC 15 and KD 15 is generally ignored. 2. In calculating the board foot measure, we must use the actual dimensions of lumber, not its nominal dimensions. 3. A lumber grade stamp must include information on the cross-sectional dimensions of lumber. 4. A lumber grade stamp must include the mill identification number.
________: the change in total cost of production as the output or total product of the business is expanded.
Fill in the blank(s) with the appropriate word(s).
Center drills break as a result of:
A) Too heavy feed and too low speed B) Dropping them on the floor C) Too light feed and too high speed D) Allowing chips to form a tangle around them
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A) 50 k? B) 39.3 k? C) 0 ? D) 10.7 k?