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4. A 10 mm thick solid gel layer in water separates two enzyme solutions. The enzyme...
A sheet of steel 2.2 mm thick has nitrogen atmospheres on both sides at 1200°C and...
A sheet of steel 2.2 mm thick has nitrogen atmospheres on both sides at 1200°C and is permitted to achieve a steady-state diffusion condition. The diffusion coefficient for nitrogen in steel at this temperature is 6.8 × 10-11 m2/s, and the diffusion flux is found to be 2.5 × 10-7 kg/m2-s. Also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 5.1 kg/m3. How far into the sheet from this high-pressure side will...
9. (4 Marks) A sheet of steel 3 mm thick has nitrogen atmospheres on both sides...
9. (4 Marks) A sheet of steel 3 mm thick has nitrogen atmospheres on both sides at 900°C and is permitted to achieve a steady-state diffusion condition. The diffusion coefficient for nitrogen in steel at this temperature is 1.85 x 10-10 m2/s, and the diffusion flux is found to be 1.0 x 10-7 kg/m2.s. Also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 2 kg/m3. How far into the sheet from this...
Mass transfer questions. QUESTION 2 [20 MARKS] Ammonia (A) - water (B) solution is in contact...
Mass transfer questions.
QUESTION 2 [20 MARKS] Ammonia (A) - water (B) solution is in contact at a surface with an organic liquid at 278 K. The concentration of ammonia in the organic phase is 10 wt%, and the density of aqueous solution is 961.7 kg/m². Meanwhile, the concentration of ammonia in water at the other end of the film at 5.4 mm away is 2.5 wt%, and the density is 991.7 kg/m². The flux of ammonia and the water...
Please show work for problems 1-4 1. Calculate the activation energy for vacancy formation in aluminum,...
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...
NUMBER 10 PLEASE -Kor Cor The Henry's law constant of oxygen in water at 25 °C...
NUMBER 10 PLEASE
-Kor Cor The Henry's law constant of oxygen in water at 25 °C is 773 atm mol'' kg of water. Calculate the molality of oxygen in water under a partial pressure of 0.20 atm. Assume that the solubility of oxygen in blood at 37 °C is roughly the same as that in water at 25 °C, comment on the prospect for our survival without hemoglobin molecules. The total volume of blood in the human body is about...
Based on the document below, 1. Describe the hypothesis Chaudhuri et al ids attempting to evaluate;...
Based on the document below,
1. Describe the hypothesis Chaudhuri et al ids attempting to
evaluate; in other words, what is the goal of this paper? Why is he
writing it?
2. Does the data presented in the paper support the hypothesis
stated in the introduction? Explain.
3.According to Chaudhuri, what is the potential role of thew
alkaline phosphatase in the cleanup of industrial waste.
CHAUDHURI et al: KINETIC BEHAVIOUR OF CALF INTESTINAL ALP WITH PNPP 8.5, 9, 9.5, 10,...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated...
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...
Can you please explain in simple terms the methods of this experiment? I'm having difficulty visualizing...
Can you please explain in simple terms the methods of this experiment? I'm having difficulty visualizing and understanding what is being done. I have copied and pasted some of the text from the article. Thank you! Abstract : Obesity, high-fat diets, and subsequent type 2 diabetes (T2DM) are associated with cognitive impairment. Moreover, T2DM increases the risk of Alzheimer's disease (AD) and leads to abnormal elevation of brain beta-amyloid levels, one of the hallmarks of AD. The psychoactive alkaloid caffeine...
9. (4 Marks) A sheet of steel 3 mm thick has nitrogen atmospheres on both sides at 900°C and is permitted to achieve a steady-state diffusion condition. The diffusion coefficient for nitrogen in steel at this temperature is 1.85 x 10-10 m2/s, and the diffusion flux is found to be 1.0 x 10-7 kg/m2.s. Also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 2 kg/m3. How far into the sheet from this...
Mass transfer questions.
QUESTION 2 [20 MARKS] Ammonia (A) - water (B) solution is in contact at a surface with an organic liquid at 278 K. The concentration of ammonia in the organic phase is 10 wt%, and the density of aqueous solution is 961.7 kg/m². Meanwhile, the concentration of ammonia in water at the other end of the film at 5.4 mm away is 2.5 wt%, and the density is 991.7 kg/m². The flux of ammonia and the water...
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...
NUMBER 10 PLEASE
-Kor Cor The Henry's law constant of oxygen in water at 25 °C is 773 atm mol'' kg of water. Calculate the molality of oxygen in water under a partial pressure of 0.20 atm. Assume that the solubility of oxygen in blood at 37 °C is roughly the same as that in water at 25 °C, comment on the prospect for our survival without hemoglobin molecules. The total volume of blood in the human body is about...
Based on the document below,
1. Describe the hypothesis Chaudhuri et al ids attempting to
evaluate; in other words, what is the goal of this paper? Why is he
writing it?
2. Does the data presented in the paper support the hypothesis
stated in the introduction? Explain.
3.According to Chaudhuri, what is the potential role of thew
alkaline phosphatase in the cleanup of industrial waste.
CHAUDHURI et al: KINETIC BEHAVIOUR OF CALF INTESTINAL ALP WITH PNPP 8.5, 9, 9.5, 10,...
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