crystals have formed‚ and drying removes any remaining solvent. The synthesis of acetaminophen does not result in a pure product‚ so recrystallization is necessary to purify the substance. During recrystallization‚ it is important to dissolve all of the solid in order to remove all the impurities. Acetaminophen crystallizes slowly‚ so cooling the mixture adequately is necessary. Leaving the mixture in an ice bath for ten minutes ensures that the process is complete. Drying the crystals removes
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Henessey Gonzalez October 24‚ 2013 Shark Finning is Inhumane Every year millions of sharks die a slow and immoral death from fishermen stripping them of their fins. These fish are taken out of the ocean and then stripped of their fins where their carcasses are then thrown back into the sea to either starve to death‚ be eaten by other predators‚ or drown because of the lack of constant movement their gills cannot extract oxygen from the water which is not only cruel but unorthodox. With that said
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Reactions: acetic acid + isopentyl alcohol isopentyl acetate + water C2H4O2 + C5H120 CH3COOCH2CH2CH(CH3)2 + H20 Procedure: A reflux condenser was assembled using a 25-mL round-bottom flask‚ hot plate‚ and aluminum block. It was equipped with a drying tube filled with calcium chloride to control vapors. Approximately 2.5 mL of isopentyl alcohol was massed and placed in the round-bottom flask that contained a stir bar. Using the same graduated cylinder‚ about 3.5 mL of glacial acetic acid was added
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Case Report: National Cranberry Cooperative Fill in your name in the header. Please read the Assignment Collaboration Guidelines in Course Syllabus: Collaboration between groups is not allowed. Below‚ write your answers to Questions 1-4 (on Syllabus). Your analysis should be based on the assumptions listed in the Syllabus. If you need to make additional assumptions to answer a question‚ clearly state them‚ logically defend them‚ and then proceed to answer the question accordingly. The idea is
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specifically calicum‚ that are present in multiple samples of water by adding another chemical to create a reaction to percipitate the calcium out of the water into a measureable solid Materials: balance (.001g)‚ 100ml beakers‚ graduated cylinder‚ drying oven‚ Na2CO3 (sodium carbonate)‚ stir rod‚ scoopula‚ DI water‚ watch glasses‚ filter paper‚ ring stand‚ funnel‚ water samples with CaCl2 (calcium chloride) Procedure: 1. Measure out a 20ml sample of each A‚ B‚ and C hard waters 2. Place samples
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Food Packaging Food packaging draws on disciplines like chemistry‚ microbiology‚ food science and engineering. About 25% of the ex-factory cost is for packaging and thus provides the challenge for food packaging technologists to design and develop functional packages at low cost. Today packaging is pervasive and essential. It surrounds‚ enhances and protects the goods from processing and manufacturing through handing and storage to final consumption without packing‚ materials would be messy
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to determine other possible uses of the fruit‚ which is abundant when in season. Samples of blackberry fruit went through oven-drying and then pulverized. Thus‚ this produced powdered samples‚ similar to those commercial ones. Five hundred sixty-one grams of the fruit samples were subjected to washing and weighing. The samples took six hours and thirty minutes of drying at a temperature of 100oC before pulverization. One and one-eighth of a gram of sample was weighed and packed in a teabag. A taste
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hair strand to what it is treated for-smooth and straight. It will be left on the hair for as much as 15 minutes before the chemical substance is cleaned off and sprayed again with hair water. Finishing the Yuko hair straightening process is the blow drying of the hair to smoothen out the hair straighteners making sure to leave the hair softer yet absolutely straight. The whole process looks like it may take a lot of time however you are assured that the results are really worth the time and the amount
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Case Sunfresh Sunfresh Ltd is a Rotterdam based importer of fresh fruit and vegetables from tropical and subtropical countries. The company sells these natural products to large retailers‚ wholesalers and market traders. The company was founded 20 years ago and has been growing since‚ mainly as a result of its sharp eye for the quality its customers want‚ tailored service and e broad line of products. Currently the company has 120 employees. Part of the products are being packed and delivered
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the filter paper with more distilled water from the wash bottle to be sure that all the dissolved materials have been removed. 11. When the filtrate stops dripping from the funnel‚ carefully removed the filter paper from the funnel and place it on a drying oven overnight. 12. After the precipitate had dried‚ measure the mass of the filter paper and precipitate. Put it on your data table 13. Disposed of the precipitate as instructed by your teacher. PreLab Questions 1. Double displacement is wh
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