GCE Examiners’ Report Edexcel GCE Physics (8540/9540) June 2003 Edexcel is one of the leading examining and awarding bodies in the UK and throughout the world. We provide a wide range of qualifications including academic‚ vocational‚ occupational and specific programmes for employers. Through a network of UK and overseas offices‚ Edexcel’s centres receive the support they need to help them deliver their education and training programmes to learners. For further information please
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"18. Dehydration of 2- Methylcyclohexanol." Organic Chemistry Lab 2040L. XU Chemistry‚ n.d. Web. 12 Feb. 2013. 2. "Material Safety Data Sheet 2-Methylcyclohexanol." Http://www.coleparmer.com/Assets/Msds/97403.htm. Coleparmer‚ 19 Mar. 1998. Web. 12 Feb. 2013. 3. "Material Safety Data Sheet Methylcyclohexane." Sciencelab.com. Science Lab‚ 09 Oct. 2005. Web. 12 Feb. 2013. 4. Helmenstine‚ Anne M.‚ Ph.D. "How to Write a Lab Report." About.com Chemistry. About.com Guide‚ n.d. Web. 23 Feb. 2013
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Crystallization: Lab Report Theory/Introduction The purpose of this lab is to understand the concept of purification through crystallization. Crystallization is the process of purifying a substance‚ with the most adequate solvent. The process of crystallization came to be based on the principle of solubility. First‚ we must choose a solvent. The solvent is crucial to crystallization because it’s what will allow impurities to dissolve. Therefore‚ when selecting a solvent it is important that it
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CO2 Lab Report Intro Alka-Seltzer tablets are used to treat cold/flu symptoms as it produces CO2 when dissolved in water. The goal of this lab is to calculate the amount of NaHCO3 is needed to produce enough CO2 gas to fill the room. Experimental One Alka-Seltzer tablet was weighed on the analytical balance. Then a piece was measured out to be between 0.21 and 0.28 grams. 500mL of distilled water was added to a 600mL beaker. 80mL of water was mixed with 20mL of 6M HCl in a 150mL beaker. A
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BIOLOGY LAB REPORT (UNIT 7: ENZYMES) GENERAL Enzymes are protein that acts as catalyst‚ lowering the activation energy need for reactions to progress in cells. The reaction can still occur without the presence of the enzyme‚ but at a much slower rate. The activation energy is the minimum amount of energy need for a chemical reaction to occur‚ yielding from a given set of reactants. In enzymatic reactions‚ we have substrates which are reactants of reaction bound to an enzyme. While an active site
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STRUCTURE AND FUNCTION OF LIVING CELLS Name Answer the following questions as you work your way through the lab material typing in your answers. Then submit your completed lab report through the “Assignment” feature. This lab report is worth 50 points towards your final lab grade. Also‚ per the Honor Code‚ this work must be your own. CELLS Using your Biology Textbook answer the following questions. 1. What types of organisms are Prokaryotes? The Prokaryotes are organisms that are
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Formal Lab Report #1 I. Basics Title of the Experiment: The Empirical Formula of an Oxide Authors: Section Number: Chemistry Location and Date II. Abstract The aim in this lab was to determine the empirical formula of an oxide of magnesium through combustion in air. This was achieved by heating an established mass of magnesium in air inside of a crucible‚ ultimately attaining a compound that contained Mg and O. The major result of the experiment was the empirical formula of the oxide of magnesium
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IB Chemistry Experiment 4 Composition of a Post-1983 Penny Lab Report Background: Through the use of percent composition one can easily find out how much of a certain element is in a compound or an item such as a post-1983 penny. The experiment will be using HCl a strong acid to dissolve all the zinc inside the outer copper shell. The reaction follows as such; Zn+2HCLZnCl2+H2‚ but there will be no reaction with copper. The portion that will be measured is the mass of copper left after all of
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Introduction The purpose of this lab was to identify unknown bacteria cultures using various differential tests‚ and my unknown bacteria is #17. The identification of these unknown cultures was accomplished by separating and differentiating possible bacteria based on specific biochemical characteristics. Whether the tests performed identified specific enzymatic reactions or metabolic pathways‚ each was used in a way to help recognize those specifics and identify the unknown cultures. The differential
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Antibiotic Lab Report By: Sierra Toll Hour: 6 Title: The effects of antibiotics on the growth of Escherichia Coli Problem: How do antibiotics affect the growth of E coli? Hypothesis: If Penicillin is applied to the bacteria‚ then the zone of inhibition will be larger. Background: The purpose of this lab was to see how effective a certain antibiotic is to kill E coli. The lab tested three antibiotics‚ Penicillin‚ Erythromycin‚ and Neomycin. The zone of inhibition‚ which is the amount of space
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