Title:Extraction:Extraction with acid and alkaline Objective: 1. To recover benzoic acid and p-dichlorobenzene from its mixture using acid-alkaline extraction. 2. To determine the percentage recovery and melting point of benzoic acid and p-diclorobenzene. Apparatus:Separatory funnel(250mL)‚Buchner funnel‚beaker. Materials:Benzoic acid‚p-dichlorobenzene‚ether‚10% NaOH‚conc.HCl‚distilled water‚ anhydrous CaCl2. Introduction: Organic compounds in an aqueous mixture can be separated
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The Effect of Turbidity on the Abundance of Riffle Beetles Introduction: In this study‚ the goal is to determine the effect of turbidity on the abundance of riffle beetles. Those that are carrying out the experiment will learn what effects that low and high turbidity have on riffle beetle abundance. It is important to there to be research on this in order to know what the effects will be on riffle beetles because they are good detectors of pollution. This can help one to understand what level of
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Veronica Guerrero Macromolecules of Life The macromolecules of life experiment involves the biology of life. The biology of life includes carbohydrates‚ lipids‚ proteins and which will not be included in this experiment nucleic acids. The introduction of this experiment will reference how to become familiar with lipids‚ carbohydrates‚ and proteins. It will also include the knowledge of how these macromolecules function in living organisms. This experiment will identify the macromolecules
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The purpose of this lab was to determine the effects of changes in variables such as temperature‚ pH and concentration on catalase enzyme activity. Proteins are organic compounds made up of amino acid subunits consisting of carboxyl and amino functional groups‚ linked together by peptide bonds through condensation reactions. They are an essential part of all living organisms. Enzymes are “biological catalyst used to speed up chemical reactions (Athanasopoulos‚ 2014). Normally‚ for chemical reactions;
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1. Introduction The waste water treatment system in Romania is characterized by a low percentage of the population connected to the saverage and waste water treatment systems. One main problem in Romania is represented by the fact that capital of Romania –Bucharest does not have a modern waste water treatment plant. The old waste water treatment plant started during the Communist period. 2. Waste water treatment in Romania. Projects in waste water sectors
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MARINE ENGINE & PROPULSION SYSTEMS (Contains extracts & edits of material courtesy of A.N.T.A. publications‚ GM‚ Cummins‚ update version Ranger Hope © 2008‚) Section 1: Principles of Diesel Engines 1.1 Common terminology 1.2 Operating principles of engines 1.3 Combustion chambers 1.4 Valve timing 1.5 Timing a fuel injection pump 1.6 Turbo charging 1.7 After coolers (Charge air coolers) Section 2: Fuel Supply‚ Injection and Control 2.1 Fuel
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IGSCE Chemistry Notes Oxides Oxides are used to determine whether an element is a metal or a non-metal. Most non-metals are classed as acidic oxides. While most metals are classed as basicoxides. Acidic Oxides * Reacts with water to form acids * Neutralises alkaline solution to form salt + water Basic Oxides * Neutralises acidic solutions to form salt + water Amphoeteric Oxides * These are non-metals which display both acidic and basic properties Alkaline Oxides * Reacts
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IGCSE PRE-AICE CHEMISTRY 0620 OFFICIAL STUDY GUIDE Notes: To avoid any confusion concerning the symbol for litre‚ dm3 will be used in place of l or litre.Valence electrons are known as valency electrons for this test. Nature of Matter The states of matter are solid‚ liquid‚ and gas‚ in respective order of kinetic energy. State of Matter | Definite Volume | Definite Shape | Solid | Yes | Yes | Liquid | Yes | No | Gas | No | No | Diffusion:
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Abstract In this piece of coursework I have been investigating the synthesis of Aspirin and checking for presence and purity of Aspirin. Throughout this coursework we have looked at the history of Aspirin; industrial manufacturing; making salicylic acid; the preparation of Aspirin; recrystallization and purity; melting point; thin layer chromatography (TLC) and titration of Aspirin. I’ve learned a lot about Aspirin‚ how it works and how it is made. We found out that the Aspirin we made and used
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placed in a commercial blender with about 200 mL of water and ground thoroughly for 5-10 minutes‚ or until all of the leaves are blended. 2. Split the extract into two and filter each using a large Buchner funnel into a 500-mL filter flask. Use additional filter flasks and Buchner funnels as necessary and change the filter paper in the funnel when filtration slows due to clogging. You may need to add excess water to remove all of the spinach remnants from the blender. 3. Meanwhile‚ prepare 375
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