Biology SL Internal Assessment What is the effect of heat on vitamin C concentrated in lemon juice? Introduction: “Vitamins are complex organic substances that are needed in very small amounts for many of the essential processes carried out in the body.” 1It is estimated and supported scientifically that only a few mg are filling the daily recommendation‚ which is essential for a healthy living. As most of vitamins cannot be produced by our bodies‚ we need to obtain them
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In the first process of the lab‚ you measure the mass of water transferred from a buret to a beaker‚ to determine the experimental mass of the water‚ and the volume of the water collected. We measured the temperature of the water so we could calculate the density of the water‚ which enabled us to calculate the actual volume of water‚ by using the density and the measured volume of water. To determine the percent error‚ we had to subtract the actual volume of water by the experimental volume of water
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One of the wonders of this planet is water. Water makes up 65% of humans‚ and 70% of the Earth. It is also common knowledge that humans cannot survive three days without it. Water is essential. If almost three-fourths of Earth is made up of water‚ why are there still so many people in the world suffering from a lack of it? Although not all water can be used for drinking purposes‚ in many places‚ water that is drinkable- is polluted or deluded by many agricultural and industrial motives and damage
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Trial 2 | Trial 3 | Trial 4 | Trial 5 | Heat produced by the burning cashew (in cal) | 4720 cal | 4320 cal | 8320 cal | 2480 cal | 1200 cal | Heat produced by 1 gram of cashew (in cal) | 11800 cal | 6171.43 cal | 5942.86 cal | 2755.56 cal | 1714.29 cal | Kilocalories of heat from 1 gram of cashew | 11.80 kcal | 6.17 kcal | 5.94 kcal | 2.76 kcal | 1.71 kcal | Note: All decimal values are approximated to two decimal values. Calculations: The heat produced by the
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MECH 4010 Design Project Vertical Axis Wind Turbine Group 2 Jon DeCoste Denise McKay Brian Robinson Shaun Whitehead Stephen Wright Supervisors Dr. Murat Koksal Dr. Larry Hughes Client Department of Mechanical Engineering Dalhousie University December 5‚ 2005 EXECUTIVE SUMMARY With the recent surge in fossil fuels prices‚ demands for cleaner energy sources‚ and government funding incentives‚ wind turbines have become a viable technology for power generation. Currently‚ horizontal
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more energy in combustion reaction than the less alcoholic hydrocarbons compounds. Equipment: Different types of alcohols in spirit burner (CH4‚ C2H6‚ C3H8‚ C4H10‚ C5H12)‚ Thermometer‚ water‚ beaker‚ scale‚ measuring cylinder‚ tripods‚ clamp‚ gauze‚ heat mat‚ lighter or matches. Hazard: Most of alcohol we using are flammable‚ irritant‚ toxic and harmful. 1 provide spirit burners which have removable glass caps‚ this makes it easier and safer to extinguish the flames. 2 Make sure the wick fits tightly
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Mr. Enrico Mantoli found merciless death while walking on the highway of Wells. Officer Sam Woods had found Mantoli’s body lying down on the pavement motionless‚ around 2 am just last night‚ while he was on his midnight patrol. Suspect is nowhere to be found‚ our respected man Mr. Mantoli has been struck from the behind of his head by a blunt instrument‚ leaving him to his death. Mantoli was the host of the upcoming music festival‚ which many of us know and heard of. But franticly Mantoli‚ was left
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Heat and dust further analysis In the novel H&D‚ Ruth Jhabvala uses the presence of heat and dust to represent the stress and effects india has on characters and the relationship between characters and culture The presence of heat and dust acts as a motif to represent the stress and effects india has on characters and the relationships between characters. Heat and dust is a very important factor in the story not only as the title of the book but also as a symbol. DUST: the purpose of dust is
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Module name: Physical Chemistry (CP 4117) Experiment: Heat of decomposition of hydrogen peroxide Lecturer: Dr Cheow Name: Loganathan Admin number: 1246102 Contents No. | Contents | Page | 1 | Abstract – a precise summary about the whole experiment and report. | 3 | 2 | Introduction to the experiment - a brief outline and relevant theory for the experiment and calculation | 3-4 | 3 | Procedure for the experiment
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06.03 Calorimetry: Lab Report Before You Begin: You may either copy and paste this document into a word processing program of your choice or print this page. Part I The Dissolving of Solid Sodium Hydroxide in Water Procedure: 1. Measure out approximately 200 mL of distilled water and pour it into the calorimeter. Stir carefully with a thermometer until a constant temperature is reached. Record the volume of water and the constant initial temperature of the water on your data table.
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