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1. Water vapor evaporating from a pond does so as if it were diffusing across an air film 0.15 centimeters thick. The diffusion coefficient of water vapor in 20 degrees C air is about 0.25 cm^2/sec. If the air out of the film is fifty percent saturated with water vapor, how fast will the water level drop in a day? Data: the saturation partial pressure for water vapor at 20 degrees C is 23.4 millibar (1 atm = 1.0325 bar). The molecular weight of water is 18 g/mol. Hint: assume the mixture of air and water vapor obeys the ideal gas law.2. Diaphragm cells are frequently calibrated by allowing 1 molar potassium chloride to diffuse into pure water.Your cell has compartment volumes of (upper) 42.3 cm^3 and (lower) 40.8 cm^3; the diaphragm is a glass frit 2.51 cm in diameter and 0.16 cm thick. In one calibration experiment, the concentration difference at 36 hours 6 minutes is 49.2% of that originally present.Estimate the diffusion coefficient? What is the cell's calibration constant?Assume H, the membrane partition coefficient=1.3. Consider the diffusion of dopant element A into crystalline wafer. The dopant rich coating is considered as a large source of A relevant to the amount of A diffused, so that the surface concentration CAs can be considered a constant. Determine the depth (z) of the front of diffusing dopant after two hours of diffusion. Assume that the front concentration is 2% of the surface concentration. Diffusivity of A= 6.5 X 10^-13 cm^2/s.
Should a corporation also be subject to a social responsibility test other than profit making when conducting business? Explain.
Identify facts which are relevant to your analysis of the ethical issue. Analyse the ethical issue using act utilitarianism, identifying all relevant consequences. Compare negative versus positive consequences and assess whether net utility will ..
What are we to make of the phenomenon of "reverse snobbery"? Reverse snobs feel they are better than others because they are "down to earth" and don't "put on airs."
Why did the U.S. Supreme Court once rule that the federal income tax was unconstitutional?
What is the difference between short-term and long-term memory? What did Donald Broadbent mean when he referenced attention filters, as related to encoding into short-term memory?
Critically discuss the historical developments of both traditional and modern ethics. What is the connection between the two developments?
What figure understood the human will in light of his pessimistic conclu sion that “life is given us, not to be enjoyed, but to be overcome”?
locus of control is when a person believes they have control; locus of control is when a person feels an outside source has control.
Critically discuss your personal experience with animals? Does your personal experience with a pet dog, cat, neighbor's animal, or just what you read and see lead you to believe that animals think?
Describe the typical cognitive development of a child in the first two years of life.
Write down about a leader that observed who demonstrate the characteristics of servant leadership: Discuss the leaders' stated attitudes/values.
Compare and contrast in detail the national constitutional government with the state constitutions. Characterize the issues that account for the differences in state and local politics.
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