EBK ELEMENTARY PRINCIPLES OF CHEMICAL P
4th Edition
ISBN: 9781119192107
Author: BULLARD
Publisher: JOHN WILEY+SONS,INC.-CONSIGNMENT
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Textbook Question
Chapter 2, Problem 2.34P
2.34. You arrive at your lab at 8 a.m. and add an indeterminate quantity of bacterial cells to a flask. At 11 a.m. you measure the number of cells using a spectrophotometer (the absorbance of light is directly related to the number of cells) and determine from a previous calibration that the flask contains 3850 cells, and at 5 p.m. the cell count has reached 36,530.
- Fit each of the following formulas to the two given data points (that is, determine the values of the two constants in each formula): linear growth, C = Co + kt; exponential growth, C = Coe*'; power-law growth, C = ktb. In these expressions, Co is the initial cell concentration and k and b arc constants.
- Select the most reasonable of the three formulas and justify your selection.
- Estimate the initial number of cells present at 8 a.m. (/ = 0). State any assumptions you make.
- The culture needs to be split into two equal parts once the number of cells reaches 2 million. Estimate the time at which you would have to come back to perform this task. State any assumptions you make. If this is a routine operation that you must perform often, what does your result suggest about the scheduling of the experiment?
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Thermophysical Properties of Petroleum Fractions and Crude Ofls
67
3.4. A gas oil has the following TBP distillation data
Volume %
TBP (°C)
0
216
10
243
30
268
50
284
70
304
90
318
95
327
100
334
It also has an average boiling point of 280 °C and an average density of
0.850 g/cm³.
(a) Split this gas oil fraction into five pseudo-components. Calculate T., Pc
and w for each pseudo-component.
(b) Calculate T, Pc and w for the whole gas oil fraction.
(c) Calculate the enthalpy of this gas oil fraction at 400 °C using the Lee-
Kessler correlation with a reference state of ideal gas at 273.15 K.
3.3. Use the following crude assay data with crude API of 36 to estimate cut
vol%, critical properties and molecular weight for Light Naphtha (90-
190 °F) and Kerosene (380-520 °F). In addition, calculate the fractions
of paraffins, naphthenes and aromatics in the two cuts.
ASTM D86 (°F)
Volume % Cum vol%
SG
86
0.0
0.0
122
0.5
0.5
0.6700
167
1.2
1.7
0.6750
212
1.6
3.3
0.7220
257
2.7
6.0
0.7480
302
3.1
9.1
0.7650
347
3.9
13.0
0.7780
392
4.7
17.7
0.7890
437
5.7
23.4
0.8010
482
8.0
31.4
0.8140
527
10.7
42.1
0.8250
584
5.0
47.1
0.8450
636
10.0
57.1
0.8540
689
7.8
64.9
0.8630
742
7.0
71.9
0.8640
794
6.5
78.4
0.8890
20.8
99.2
0.9310
Chapter 2 Solutions
EBK ELEMENTARY PRINCIPLES OF CHEMICAL P
Ch. 2 - Prob. 2.1PCh. 2 - Prob. 2.2PCh. 2 - Prob. 2.3PCh. 2 - Prob. 2.4PCh. 2 - Prob. 2.5PCh. 2 - Prob. 2.6PCh. 2 - Prob. 2.7PCh. 2 - Prob. 2.8PCh. 2 - Prob. 2.9PCh. 2 - Prob. 2.10P
Ch. 2 - Prob. 2.11PCh. 2 - Prob. 2.12PCh. 2 - Prob. 2.13PCh. 2 - Prob. 2.14PCh. 2 - Prob. 2.15PCh. 2 - Prob. 2.16PCh. 2 - Prob. 2.17PCh. 2 - Prob. 2.18PCh. 2 - During the early part of the 20th century,...Ch. 2 - Prob. 2.20PCh. 2 - Prob. 2.21PCh. 2 - Prob. 2.22PCh. 2 - Prob. 2.23PCh. 2 - Prob. 2.24PCh. 2 - Prob. 2.25PCh. 2 - The Prandtl number, Np,, is a dimensionless group...Ch. 2 - Prob. 2.27PCh. 2 - Prob. 2.28PCh. 2 - Prob. 2.29PCh. 2 - Prob. 2.30PCh. 2 - Prob. 2.31PCh. 2 - Prob. 2.32PCh. 2 - Prob. 2.33PCh. 2 - 2.34. You arrive at your lab at 8 a.m. and add an...Ch. 2 - Prob. 2.35PCh. 2 - Prob. 2.36PCh. 2 - Prob. 2.37PCh. 2 - Prob. 2.38PCh. 2 - Prob. 2.39PCh. 2 - A hygrometer, which measures the amount of...Ch. 2 - Prob. 2.41PCh. 2 - Prob. 2.42PCh. 2 - Prob. 2.43PCh. 2 - Prob. 2.44PCh. 2 - Prob. 2.45PCh. 2 - Prob. 2.46PCh. 2 - Prob. 2.47PCh. 2 - Prob. 2.48PCh. 2 - Prob. 2.49PCh. 2 - Prob. 2.50PCh. 2 - Prob. 2.51PCh. 2 - Prob. 2.52PCh. 2 - Prob. 2.53PCh. 2 - Prob. 2.54PCh. 2 - Prob. 2.55P
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