Biruiet Test: Procedure Instead of the Biuret Reagent‚ the following may be used: * Fehling’s Solutions A and B * Sodium hydroxide and copper (II) sulphate solutions 1. Add 2 cm3 of the liquid food sample* to a clean‚ dry test tube 2. Add 2 cm3 of Biuret Reagent. Alternatively: * Use sodium hydroxide solution and copper sulphate solution instead. Add 1 cm3 of sodium hydroxide solution (40% or bench solution) and 1% copper (II) sulphate solution dropwise – drop by drop - to
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of Engineering (Hons) (Chemical Engineering) JULY 2009 Universiti Teknologi PETRONAS Bandar Seri Iskandar 31750 Tronoh Perak Darul Ridzuan ABSTRACT The objective of this project is to optimize the preparation of modified Calcium Oxide (CaO) to capture CO2 by carbonation through hydration of ethanol/water. The carbonation reaction is the basis for CO2 capture systems. However CaO as regenerable CO2 sorbents in industrial processes is limited by the rapid decay of the carbonation
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Erica Mitchell Mr. Vredenburgh Period 5 52/55 The Effect of Carbon Dioxide on Salt Water Abstract Background: The human population strongly relies on the oceans for food‚ transportation‚ recreation‚ climate regulation‚ and half of the Earth’s oxygen. These oceans‚ that we rely so heavily on‚ are becoming more acidic and less hospitable‚ making ocean acidification the world’s second most important atmospheric carbon problem. This carbon is released into the atmosphere by burning fossil fuels
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Para Quinone Dioxime (PQD) What is PQD? PQD is a non-sulphur vulcanizing agent for synthetic elastomers. It is used extensively for rapid curing of butyl stocks requiring heat resistance. Butyl of this type is used to fabricate high voltage wire and cable products‚ moulded electric components‚ and heat resistant seals and hose. PQD has also been used as part of the curative system for liquid butyl elastomers. These compounds are formulated as coatings‚ sealants and electrical encapsulants. The
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CHEMISTRY EXPERIMENTAL REPORT SALLY LI INTRODUCTION: In chemistry‚ compounds can be distinguished by using the empirical formula. The formula provides the simplest positive integer ratio of elements in a compound. The empirical formula is largely useful in determining the ratio of elements within ionic compounds where the structure is of a non-directional nature of bonding where any ion at any time could be surrounded
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biotechnology-journal.com Research Article Biosynthesis of metal and oxide nanoparticles using Lactobacilli from yoghurt and probiotic spore tablets Anal K. Jha1 and K. Prasad2 1University 2University Department of Chemistry‚ T.M. Bhagalpur University‚ Bhagalpur‚ India Department of Physics‚ T.M. Bhagalpur University‚ Bhagalpur‚ India Green‚ low-cost‚ and reproducible Lactobacillus-mediated biosynthesis of metal and oxide nanoparticles are reported. Silver and titanium dioxide nanoparticles
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Journal of Nanobiotechnology This Provisional PDF corresponds to the article as it appeared upon acceptance. Fully formatted PDF and full text (HTML) versions will be made available soon. Effect of iron oxide and gold nanoparticles on bacterial growth leading towards biological application Journal of Nanobiotechnology 2011‚ 9:34 doi:10.1186/1477-3155-9-34 Saptarshi Chatterjee (saptarshi_gcc07@yahoo.co.in) Arghya Bandyopadhyay (arghya.micro@gmail.com) Keka Sarkar (keka@klyuniv.ac.in) ISSN
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Food and Chemical Toxicology 45 (2007) 1650–1661 www.elsevier.com/locate/foodchemtox A comparison of chemical‚ antioxidant and antimicrobial studies of cinnamon leaf and bark volatile oils‚ oleoresins and their constituents q Gurdip Singh b a‚* ‚ Sumitra Maurya a‚1 ‚ M.P. deLampasona b‚ Cesar A.N. Catalan b a Chemistry Department‚ DDU Gorakhpur University‚ Gorakhpur 273 009‚ India Instituto de Quimica Organica‚ Universidad Nacional de Tucuman‚ Ayacucho 471‚ S.M. de Tucuman
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Looking back at the research question‚ the actual amount of reactant did not match the theoretical stoichiometric amounts according to the balanced equation‚ but the amount of catalyst matched the original value when uncertainty is taken into account. The percent yields for the reactants in the equation are very far from 100% yield. In the case of water‚ the percent yield came out to be meaning there were at least 2 times to 4 times more water than there should be. The percent yield of oxygen came
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Empirical Formula of a Copper Oxide Purpose: To convert an unknown copper oxide to copper (Cu) metal using natural gas to provide a reducing environment as shown below: Cu O (s) + CH (g) ¨ Cu (s) + Co (g) + H O (g) From the mass difference between the unknown copper oxide and the Cu metal generated at the completion of the reaction and the molar mass of Cu and oxygen‚ the empirical formula of the original copper oxide can be calculated. Materials: gCopper oxideh (1.0 g) Bunsen burner
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