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Find percentage extraction of nicotine for (a) 100 kg feed; 150 kg solvent; one extraction (b) 100 kg feed; 50 kg solvent three extractions kg nicotine/kg water 0 1.01 kg nicotine@ kerosenea 0 0.807 aAll values multiplied by 100. 13-44. We treat this as a binary solution of A and B, ignoring the small amount of AB that is present (the pseudobinay assumption). Ho Surface 1 Surface 2 Aqueous Water benzoic - Surface 1 acid Cold CH4 N H ~ Aqueous ammonia out (a ) (b) (4 Surface 2 Surface 1 923.1 The Macroscopic Mass Balances 727 In this chapter we summarize the macroscopic balances for the more general situa- tion described above.

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A correction factor for nonspheres is available [P3]. T For a pure substance or no change in composition, we will have: (dp/p)= (dρ/ρ) + (dT/T) 95. However, the instantaneous effects of accelera- tion can be appreciable for particles greater than about one micron in diameter. The corresponding equation for the salt S yields or It follows that - X ~ ' e X ~ - e Y5e -- - = exp(% A n ) X ~ - m X ~ In Y~wi and therefore that the concentration of salt in the membrane phase is less than that in the so- lution.

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Circulating flow produced by an axially moving rod in a closed annular region. (a) First consider the problem where the annular region is quite narrow-that is, where K is just slightly less than unity. Molecular weight of chloropicrin is 164. of chloropicrin are 3 178.0412 m below the top. Emphasis is placed on the relationship between geology, log interpretation, well testing, and primary-secondary recovery of hydrocarbons from naturally fractured reservoirs.

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A scale of turbulence value for air flowing in a tube at 12 d s e c is 0. In many problems, both U and AT vary with position in the exchanger, sometimes nonlinearly. Equation (14-32) gives the interface locus: Figure 14-23. TABLE C.2 SI base and supplementary quantities and units* SlUhtSpbOl (“abbreviation”); USeronUa (wm0 type m kg s A K mol cd rad sr \ QmntIty or udimension” Base quantity or “dimension” length mass time electric current thermodynamic temperature amount of substance luminous intensity Supplementary quantity or “dimension” plane angle sold angle l SI unit meter kilogram second ampere kelvin molet candela radian steradian From Perry and Green, Perry’s Chcmicol Eqineem’ Handbook, 6th ed., McGraw-W, New York, 1984, pp. 1-2.

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In general, these conditions must be calculated from momentum and energy balances, as discussed in Problem 22B.1. Under what conditions is the effect of geometry on radiant heat interchange completely ex- pressible in terms of view factors? The "best" solution is to experimentally measure coefficients on a bench scale (using a wetted-wall column, etc.) and then use the results to design a full scale separation column. Recall that this problem also occurred in Eq. (10.33) and prevented an exact solution to the flow through the sudden contraction in Fig. 10.8.

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There is negligible pressure loss in the suction pipe between pump and pond. Maximum vapor capacity at column top is 2000 molehr.0 Will the column operate satisfactorily? Established minor field programs (corresponding to established fields of study) must be approved by the appropriate field chair. Nsb kf N st7 maSS = a = c 0.5

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Describe the behavior of the hypothetical membrane for which KD = 1.0, solute activity coefficients are unity, and B,',/B~,, = v,,/V,. Note that q is a vector, since pU is substituted. Since in Chapters 10 and 11 we will be setting up problems by using the law of con- servation of energy, we need to know not only how heat moves into and out of a system but also how work is done on or by a system by means of molecular mechanisms. Placing these values back into Eq. (8.33) gives Eq. (8.32): s = agf (8.32) Either procedure is satisfactory; the same result is always obtained.

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The individual processes used by chemical engineers (eg. distillation or chlorination ) are called unit operations and consist of a chemical reaction, mass-, heat- and momentum- transfer operations. Lightfoot, Transport Phenomena, John Wiley and Sons, New York (1960). 2. S., 520,549 Einstein, A., 739,740,750 Einstein, H. A final public examination is held under the auspices of the committee in charge of the candidate's course of study.

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SOLVED EXAMPLES 71 In order to work this problem. A common and effective baffling arrangement for vertical cylindrical tanks with axially mounted impellers is a set of four evenly spaced strips along the tank wall, with their flat surfaces in planes through the tank axis, extending from the top to the bottom of the tank and at least two-tenths of the distance to the tank center. Furthermore. we use the ratio approach pointed out earlier for the Reynolds and Brinkman numbers.

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Example 1-5 Compare viscosity values for liquid water at 60°C as determined by 1.023 x kg mole 6. Selected topics pertinent to chemical engineering. Equation (2-37) is applicable: Figure 2-24. Temperature scales are based on changes in properties of materials with temperature. Although this model is physically unrealistic, it has nevertheless proven useful as a simplified picture for correlating mass transfer coefficients. * C.