CHAPTER ONE 1.0 INTRODUCTION This report is a practical experience acquired by me in the course of my industrial training at Druckfarben Nigeria Limited (DFN) under the student industrial work experience scheme (SWIES). In the earlier stage of science and technology education in Nigeria‚ students were from their respective institutions without any technical knowledge or working experience. It was in this view that students undergoing science and technology related courses were mandated in different
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............................................. - 6 Treatment of Experimental Data .......................................................................................... - 11 EXPERIMENTS: A - Kinetics of the Acid Catalyzed Hydrolysis of Methyl Acetate .......................................... 13 D - Determination of the Viscosity and Related Properties of Gaseous N2 and CO2 ............ 18 M - Determination of the Validity of the Beer-Lambert Law ..............................................
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polymers‚ DuPont has remained a leader the field. In addition to Elvax®‚ DuPont makes high impact polystyrene (HIPS)‚ which is also produced by other manufacturers. ELVAX® 150W: Manufactured by DuPont‚ Elvax® is a copolymer of ethylene and vinyl acetate (EVA). It is flexible‚ resilient‚ tough‚ and resistant to ozone or environmental stress cracking. Elvax® can be used alone or as an additive to improve other resins or elastomers. With no plasticizer to migrate and minimal odor‚ Elvax® has advantages
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Swimmers ear: Infection of the skin covering the outer ear canal that leads in to the ear drum‚ usually due to bacteria such as streptococcus‚ staphylococcus‚ or pseudomonas. Swimmer’s Ear Symptoms • The most common symptom of swimmer’s ear is pain. Pain gradually begins over a day or two. The pain almost always involves only one ear. The pain is especially intense when the ear is touched or pulled. • The ear canal may itch. • The outer ear may be red‚ and in severe cases the ear
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from a weak acid and a strong base hydrolyze to form a solution that is slightly basic. In this kind of hydrolysis‚ it is the anion from the weak acid that actually reacts with the water. For example‚ when sodium acetate‚ NaC2H3O2‚ hydrolyzes‚ water molecules react with the acetate ion: C2H3O2- + H2O ---------> HC2H3O2 + OH- The formation of the OH- ion from this reaction makes the solution basic. Salts formed from a week
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use of elaborate apparatus (17). “They were predestined to emigrate to the tropics‚ to be miner and acetate silk spinner and steel workers” (13). Subordinate Clauses: “He had a long chin and big rather prominent teeth” (6). At the same time‚ we see to it that all country sports shall entail the use of elaborate apparatus (17). “They were predestined to emigrate to the tropics‚ to be miner and acetate silk spinner and steel workers” (13). Conditional Clauses: “If any of the eggs remained unfertilized
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--- Experiment 1 : Thin-layer Chromatogragaphy : Analysis of Drug Components CHEM221 Date experiment performed : January 20‚ 2014Date Submitted : January 27‚ 2014 Introduction This laboratory has its first objective to familiarize with the thin layer chromatography (TLC) technique. Second‚ each student has to identify the unknown components by comparing it to one of the tree dissolved liquid analgesics: Acetaminophen‚ Aspirin and Caffeine. Finally‚ calculating the Rf value by measuring
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recrystallization. This experiment includes the determination of a good solvent for recrystallization for compounds such as: acetanilide‚ acetamide‚ aspirin‚ benzoic acid‚ naphthalene‚ and sucrose‚ for solvents such as: water‚ ethanol‚ benzene‚ and ethyl acetate. Also pure acetanilide is achieved. here are five major steps in the recrystallization process: dissolving the solute in the solvent‚ performing a gravity filtration‚ if necessary‚ obtaining crystals of the solute‚ collecting the solute crystals by
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Variety Variety is the spice of the Barbie Doll Marketing Success. First introduced to the US market in 1959‚ Barbie has grown into a global cultural phenomena. From just one female doll‚ the Barbie family has grown and includes over 38 friends and relatives. There are now dolls that represent multiple ethnicities‚ males‚ different age groups‚ different abilities‚ different lifestyles‚ etc. All totaled‚ there are now over one hundred and fifty different dolls under the Barbie brand. Quality
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determined‚ using constant temperature bath (4‚ room temp‚ 37‚ 50‚ 60‚ and 70°C). Having the room temp and 50°C as the highest and 37°C as infinite. In the second part of the experiment‚ the effect of pH was examined. Using the buffered solutions: acetate solutions (pH 4 and 5)‚ phosphate buffer (pH 6.7 and 8)‚ and bicarbonate buffer (pH 10). The results were recorded having all of them as infinite. Keywords: enzyme‚ infinite‚ pH‚ temperature‚ salivary amylase‚ starch I. Introduction Enzymes
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