(1) You have given a concentration profile, C(x)=5e -5x in g/cc. [8] A. find the diffusion...
a) What is the diffusion coefficient (DHCi) at 99 °C for a very dilute solution of hydrogen chloride, HC, in water? The ionic diffusion coefficients in water at 25°C are 9.31 X 105 cm2/s for H and 2.03 X 105 cm2/s for Cl. Start this problem by calculating the ionic |diffusion coefficients at 99 °C from those given at 25 °C assuming the viscosity of water at 25 °C and 99 °C is the same. Assume there is no current...
1. [EfTectiveness factor] (a) Consider the following governing equation which can describe the reaction-diffusion inside a porous catalyst with the flat geometry: where C is the concentration of species A, k is the reaction constant, and D is the diffusion coefficient. The corresponding boundary conditions are given by CA = Cas = 1 at x = 0 and = 0 at x = 1 dx The schematic for the domain is illustrated in Fig. I 1-0 CA-CA-1 dC dr Fig....
Please show work for problems 1-4
1. Calculate the activation energy for vacancy formation in aluminum, given that the equilibrium number of vacancies at 500°C (773 K) is 7.57 x10m3. The atomic weight and density (at 500°c) for aluminum are 26.98 g/mol and 2.62 g/cm, respectively 2. What point defects are possible for Al,0, as an impurity in Mgo? How many Al ions must be added to form each of these defects? 3. A sheet of steel 4.5 mm thick...
A long wire with circular cross section and diameter D = 1 mm is submerged in an oil bath with temperature To 20。C. The wire is initially at temperature T = 20。C, the same temperature as the oil. A current is passed through the wire, resulting in a volumetric heat generation of q - 1.5 x 108 W/m3. The convection coefficient is h - 500 W/m2 - K, and the properties of the wire are ρ-8000 kg/m3, Cp-500 J/kg-K, and...
Problem 1: Given the function g(x,y)-ke-xy-c)u(x-a)u(y-b) find the constant "k" in terms ofa, b, and c so that g(x,y) is a valid probability density function (15%). Are the random variables X and Y statistically independent (10%)? (Support your answer.)
For the closed-loop system shown, and given: C(s) 8.41 s+8.10 G(8 2 0.02 3.00 2out G(s) C(s) control plant Part A-Plant 1% settling time Find the 1% settling time of the plant G(s) to a unit step input. 15.38 t,3% - Submit X ncorrect; Try Again - Part B Plant: Overshoot Find the overshoot of the plant G(s)to a unit step input. Give your answer as a percentage Mp: | Value Units Submit Request Answer Part C - Closed-loop system:...
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VOCABULARY BUILDER Misspelled Words Find the words below that are misspelled; circle them, and then correctly spell them in the spaces provided. Then fill in the blanks below with the correct vocabulary terms from the following list. amino acids digestion clectrolytes nutrients antioxident nutrition basal metabolic rate extracellulare oxydation calories fat-soluble presearvatives catalist glycogen processed foods cellulose homeostasis saturated fats major mineral coenzyeme trace minerals diaretics metabolism water-soluable 1. Artificial flavors, colors, and commonly added to...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...