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    Experiment 10

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    Molarity of these samples was also calculated to determine concentration and percent error rate. Students also analyzed the concentration of blue dye #1 to determine the concentration of blue dye #1 in a commercial blue dye drink. Procedure: To drop solutions into the test tubes and then determine the Beer’s Law relationship of each and the calculations of each of part of the experiment. Convert %T to absorbance and prepare a Beer’s Law plot using this data. 1. Concentration of Various Samples Sample

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    Membrane Experiment

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    ------------------------------------------------- ABSTRACT Separation processes by using the application of membrane have become highly demand in various industries. In this newly separation process ‚ the membrane function as a semi-permeable barrier and the separation process occur by the membrane controlling the rate of movement of various molecules between two liquid phases ‚ two gas phases or a mixture of a gas phase and liquid phase. In industries‚ many companies have high demand on both quality

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    characterized using TG‚ DTA‚ IR spectroscopy‚ X-ray and atomic absorption spectrophotometry. The thermal conversion of the compounds is 54.36–88% at 1000°C. Their solubility in sodium hydroxide‚ mineral acids‚ organic solvents‚ distilled water and salts solution has been measured. Fungicidal activity of the dithiocarbamates has been tested by well or cup diffusion method using five fungi species. Their activity has also been tested by broth dilution method using six bacterial species. Minimum Inhibitory

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    Cited: Page Acetaminophen 10 pages [online] AOL.com October 14‚ 2007 Butt‚ John B. “Osmosis.” The World Book Encyclopedia. Ed. 2000‚ page 865-866. Butt‚ John B. “Solution.” The World Book Encyclopedia. Ed. 2000‚ page 587. Martin‚ Seth Solubility of Solutes and Aqueous Solutions LSU Undergraduate Chemistry Information Depot (1997) page 1 [online] google.com. October 14‚ 2007 http://www.chem.lsu.edu/lucid/tutorials/solubility/Solubility.html Ogbru‚ Outcome Acetaminophen

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    Osmosis And Diffusion

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    can be placed on ice and one should be left at room temperature. The flask should be placed on ice for about fifteen minutes until the water temperature is equal to the ice bath temperature. To indicate the rate of diffusion one milliliter of dye solution can be placed in each flask. Over period of one hour the colder flask will result in slower diffusion that the flask at room temperate. This experiment accurately supports that at higher temperatures molecules will diffuse faster. Diffusion in a

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    Evaporation

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    Evaporation is one of the main methods used in chemical industry for concentration of aqueous solutions that means the removal of water from solution by boiling the liquor in a suitable type of evaporator and withdrawing the vapor (Coulson & Richardson‚1983). The objective of evaporation is to concentrate a solution consisting of non-volatile solute and a volatile solvent. In the overwhelming majority of evaporations the solvent is water. Normally‚ in evaporation the thick liquor is the valuable

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    pure substance. *Distillation- for liquid compounds‚ *Recrystallization- solid compounds Recrystallization - precipitation of a solid cpd. from a saturated solution in the form of crystals through cooling or evaporation -7 steps: 1) selecting the appropriate solvent 2) dissolving the solute 3) decolorizing the solution 4) removing suspended solids 5) crystallizing the solute 6) collecting and washing the crystals 7) drying the product - 2 Kinds of Impurities: 1)

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    Lifestyle Chemistry

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    1. LIFESTYLE CHEMISTRY -many consumer products have been developed because of increased understanding of chemical substances‚ chemical reactions & the biochemistry of human body surfaces -some products are used as cleaning agents while others have been developed to act as barriers against environmental factors like wind and heat -some products are mixtures‚ used for medicinal purposes‚ & require a different understanding of body chemistry & chemical interaction -production of these

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    insoluble. 5. The limit of solubility of a solid in a solvent is influenced by the pressure‚ temperature and the nature of the solvent. 6. In the lab for combination 13‚ I think that these discrepancies occurred‚ because the aqueous solutions were compromised. 7. One could test the limits of solubility for each

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    Potato Osmosis Lab Report

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    that will determine what concentration of solute is isotonic with the specimen cells. (Design) Procedure: You will be provided with the following materials: Potato‚ potato corer‚ scalpel‚ forceps‚ electronic balance 10 % salt solution‚ distilled water‚ 50 mL beakers‚ graduated cylinder‚ paper towel You must design a procedure that will enable you to determine the concentration of salt that is isotonic with your specimen. You may use only the materials above and you must

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