Practical Report: Background Information: Hydrogen peroxide (H2O2) is a combination of hydrogen and oxygen. In high concentrations‚ it can be unstable and even poisonous. In lower concentrations‚ such as the types found in many homes‚ it works well as a disinfectant and antiseptic.The reason behind foaming of Hydrogen peroxide is because blood and cells contain an enzyme called catalase. Since a cut or scrape contains both blood and damaged cells‚ there is lots of catalase floating around.When
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by either increasing how often collisions occur or by making collisions more effective. PURPOSE To examine factors that increase reaction rate SAFETY Portions of this lab may only be carried out under the supervision of a teacher Safety goggles must be worn when working with acids. Factors Affecting Reaction Rate EQUIPMENT AND MATERIALS Part 1. Effect of Particle Size solid zinc‚ approx. 0.5 cm × 2 cm‚ or solid marble chips zinc powder or calcium carbonate powder balance 2 test
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The Effect of temperature on beetroot This experiment is designed to investigate the effect of varying temperature (centigrade) on beetroot and its cells. My earlier experiment suggest that as temperature increases the integrity of the beetroot cell membrane will be destroyed and a subsequent release of beetroot pigment will be released into its surrounding milieu(in this case distilled water). In the experiment I will examine if my hypothesis (above) is correct. In order to conduct this experiment
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used as an oxidizing agent and (NO2) nitrogen dioxide will form. This gas is extremely toxic‚ and should not be inhaled. A use of a fume hood should be used during the process of adding nitric acid (HNO3) to the solution. Additionally‚ safety goggles should be worn throughout the entire lab. Shoes should be closed toed‚ clothing should cover
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Chemistry Assessment Practical and Report: Introduction: The experiment was conducted to find the unknown molarity of HCL. The unknown molarity of HCL was found by the use of the titration method and then comparing the results between the titrant and analyte HCL solutions. Molarity is a concentration unit‚ it is defined by the number of moles the total volume of the solution. This experiment included a process called titration‚ used to work out the unknown concentration of a known substance.
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Borough Council (1951) AC 367‚ a mechanic with only one eye sight was removing a rusted bolt when a metal clip flew into his good eye and blinded him totally. The mechanic was not provided with goggles to wear. The court held that‚ in view of fact that a reasonable person in place of employer would have provide goggles and would have taken care of plaintiff. 3) Steps to avoid the risk of harm: It includes the cost and efforts that would have been required to avoid the harm. If the harm is small and the
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Research Paper in Swimming Submitted by: Berroya‚ Kristine M. BSBA-MM 2-2D Submitted to: Prof. Magat Swimming (sport) Swimming is an activity that burns lots of calories‚ is easy on the joints‚ supports your weight‚ builds muscular strength and endurance‚ improves cardiovascular fitness‚ cools you off and refreshes you in summer‚ and one that you can do safely into old age. In this article‚ I’ll review the history of swimming‚ the benefits‚ the strokes‚ how to get started‚ what to wear
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Unit 6 Lab Report 1. Objective: To find the percent composition of water in an unknown hydrate. 2. Materials: Goggles‚ apron‚ evaporating dish‚ hot plate‚ and stirring rod 3. Procedure: get the mass of a evaporating dish‚ put a sample of the hydrate onto the evaporating dish and mass the dish with hydrate. Put the dish with hydrate on the hot plate on high heat. Break up any clumps that form during the heating process. Observe any color
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In George Orwell’s 1984‚ O’Brian utilizes heinous methods of physical and psychological torture to deindividualize and brainwash Winston. Winston endures torture methods like beatings‚ degradation‚ intimidation‚ and starvation. O’Brian’s methods of choice are not unlike the various torture methods used throughout history‚ particularly the methods used by the CIA in the 1950s. Upon the start of the Cold War‚ the CIA began testing different torture techniques in an attempt to gain the upper hand against
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CHM130LL General Chemistry I Laboratory Lab 1 Answer the following questions in short‚ complete sentences. 1. When must goggles be worn in the lab? 2. Why are eating and drinking prohibited in the lab? 3. If you injure yourself in the laboratory‚ what should you do? 4. Why should loose hair‚ clothing and jewelry be restrained while you are performing an experiment? 5. Describe an appropriate work area for experimentation? 6. Why must shoes be worn at all times while performing an
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