S5E1 Gaseous Diffusion 1.0 ABSTRACT In this experiment‚ our objective is to find out the gas diffusion coefficient‚ D of acetone in the air. This experiment is conducted at a temperature of 50ºC and atmospheric pressure. The method that is applied to conduct this experiment is called the Winkleman method where the level of acetone (Z) is determined every 15 minutes by using a microscope. With the level of acetone being determined‚ a graph of t/L+Lo (min /mm) vs. L-Lo (mm) is plotted and the
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solution of the diffusion equation describing the flow of radon through soil ´ ´ Svetislav Savovic a‚b‚n‚ Alexandar Djordjevich a‚ Peter W. Tse a‚ Dragoslav Nikezic b a b City University of Hong Kong‚ 83 Tat Chee Avenue‚ Kowloon‚ Hong Kong‚ China ´ Faculty of Science‚ R. Domanovica 12‚ 34000 Kragujevac‚ Serbia a r t i c l e in fo abstract Article history: Received 13 April 2010 Received in revised form 13 September 2010 Accepted 14 September 2010 Radon diffusion through soil and
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trading route that began around 138 B. C. These were routes that were paramount to the exchanges and interactions between civilizations. These routes connected the west and east by monks‚ soldiers‚ merchants‚ pilgrims‚ also nomads. The Route traveled through china‚ the highlands of the Pamir and Tian Shan ranges‚ the Tarima basin‚ and onto‚ Afghanistan‚ Central Asia‚ and Iran and to the eastern shores of the Mediterranean Sea. This route insisted travel by either land or sea. Extending about 6‚000 kilometers
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EXPERIMENT 5 GAS DIFFUSION COEFFICIENT OBJECTIVES: Determine the gas diffusion coefficient of acetone using the established Winkelmann’s method KEYWORDS Diffusivity‚ Gas Diffusion Coefficient‚ Winkelmann’s method OVERVIEW The knowledge of physical and chemical properties of certain materials is important because very often process engineering deal with the transformation and distribution of these materials in bulk. One such property is diffusivity. Mass transfer by diffusion takes place
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Cell Membrane Developers of Lab: Adapted by James Kirby JD726‚ Jennifer Mortellaro JD449‚ and James Prockup JD575 from a publication by the Department of Biological Sciences at Western Michigan University‚ Kalamazoo‚ MI Overview of Lab: Description: The purpose of this lab is to illustrate the effects that temperature and solvents have on the cell membrane. Red beet tissue contains large amounts of betacyanin‚ a red pigment‚ located in the large internal membrane vacuoles
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a technique for processing liquid radioactive waste water using membrane techniques to single out only radioactive waste components without affecting the salt ballast. This solution dramatically reduces the amount of radioactive concentrates to be long-term storage‚ and provides an opportunity to re-use treated water and chemicals. Keywords. Liquid radioactive waste‚ radioactive waste water purification‚ reverse osmosis‚ selective extraction of radionuclides. Introduction. To radioactive waste
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Usman Omid Biology IB 1A The Effect of Temperature on Beetroot Membranes _Aim_ This practical will test the effect of temperature on the integrity of the membranes‚ _Introduction_ The cells of beetroot contain a pigment called betalain in their vacuoles. It is kept inside the cells by the membranes. If these membranes are damaged‚ then the betalain leaks out. The amount that leaks out can be assessed‚ as the leaked out pigment will color the water surrounding the cells. This information can
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difference in charge between the inside and the outside of the cell membrane. This difference in charge is continued by three factors. Firstly‚ in the cell membrane‚ there are sodium potassium ‘pumps’ crossing the membrane which are proteins that bring 2 potassium ions into the cell‚ for every 3 sodium ions it pumps out. As well as this‚ there are protein channels which allow potassium ions in the cell to flow out via facilitated diffusion. Potassium diffuses out the cell much more readily than sodium
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foreign borrowings‚ dollar inflows are tempered and the peso is kept from significant appreciation. The government decided not to borrow from foreign‚ commercial sources of credit this year. It said all funding requirements will be met mostly through the sale of government securities in the domestic market. “The current level of the peso is fine‚” Balisacan said. The weakening of the peso back to the 43-to-a-dollar level
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Board of Directors‚ Paducah Gaseous Diffusion Plant/Department of Energy FROM: Kathleen Hayes‚ Consultant for Paducah Gaseous Diffusion Plant/Department of Energy DATE: 17 November 2012 RE: Notification of Potentially Hazardous Working Conditions and Worker Health Introduction Ethical and moral issues have been brought into question when determining the proper protocol when informing employees of potential health risks while on the job. Paducah Gaseous Diffusion Plant and the Department of Energy
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