4oikmfbholjkokgh0kjyThe various methods available to synthesize aspirin lead to the need to examine and evaluate production efficiency and purity. The purpose of our experiment was to synthesize aspirin from acetyl anhydride‚ salicylic acid‚ and sulfuric acid. And then determine the relative purity of the synthesized sample. The procedure performed in our experiment involved chemically reacting salicylic acid and acetic anhydride in order to form acetyl salicylic acid. The limiting reactant in this chemical reaction
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For the seventh experiment we will be performing different type of test to see how different chemical react with each other. The first experiment will be a demonstration the professor will give to the class. the first experiment you will be performing will include a test tube you will add a couple drops of dilute hydrochloric. you will add this to five little pieces of zinc metal. In next experiment you will performed you will put 2 ml of 3% hydrogen peroxide solution in a test tube .you will also
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Concentration Dependence of Reaction Rates Introduction: The purpose of this experiment was to determine the differential rate law for a chemical reaction based on the relationship between the concentration of reactants and the rate of reaction. Since spectrophotometers‚ like Spec-20s‚ provide information about concentration‚ these instruments were used to monitor the increase or decrease in concentration of a reactant in a solution over time. By plotting [phph2-] versus time and changing the concentration
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a scientific paper becomes a part of creating and validating new knowledge‚ techniques‚ discoveries‚ and inventions. As a student in Chemistry laboratory‚ you will be required to write scientific paper based on the results of your class experiments. This will serve as an important training ground for you as research-proficient scientists‚ medical & allied health science practitioners‚ engineers‚ and educators in the future. The training will include preparation of schematic diagram
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The purpose of Experiment 36 is to identify the anions present in an unknown solution based on the chemical reactions with various chlorides. In this experiment‚ Pb2+ was present in the unknown solution‚ while the presence Hg22+ is in doubt‚ and Ag+ is absent. To begin‚ the first part of the experiment involved analyzing the results from the experiment with the solution with equal volumes of AgNO3‚ Pb(NO3)2‚ and Hg2(NO3)2. Based on the results and observations obtained from the tests with the stock
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An Experiment of Adaptation Introduction: Throughout history of time‚ organisms change in relation to their environment‚ consequently‚ adaptation is an essential property of life. This experiment is designed to test the adaptation of Drosophila melanogaster. This kind of insect is also called fruit flies‚ it has been widely used in scientific research because it has a short life cycle about two weeks and it is easy to keep large numbers of them (Manning). Two groups of this species will be used
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water‚ it will affect the swimming speed of the paramecium. The various students groups have individual experiment of how dose NaCl affect swimming speed of Paramecium‚ but the experiment did not show the result clearly to students. Therefore‚ after they finish the presentation‚ most of the students want to find out the chemical NaCl increases swim speed of Paramecium. Experiment Design The experiment prediction is if we add 4mL of Paramecium to 25mL of 0.2M NaCl and 225mL of Dryl’s solution‚ then Paramecium
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Purpose: Can the penny hold more drops of water or more drops of the MYSTERY liquid? Research: Cohesion- The state of sticking together. Pennies can hold more water because soap reduces the cohesion of water and the water molecules break apart and can’t stay on the penny. Hypothesis: The penny will hold more a larger number of drops of water because water is more cohesive than the “mystery” liquids Variables: Independent variable: Penny Dependent variable: Number of Drops of Water Control
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Experiment 1: Error‚ Uncertainties and Measurements Laboratory Report Jan Luke Mendoza‚ Alexis Vienne Munar‚ Paula Murakami‚ Giorla Joanne Negre Department of Math and Physics College of Science‚ University of Santo Tomas Espana‚ Manila Abstract Throughout the experiment the main goal is to find out about the realities in taking measurements‚ that is‚ that there will always be an uncertainty for each acquired value. And to find out and recognize these uncertainties was handled in the
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Morcilla‚ Ma Dame Ametrini T. MT11213 Chem 24 Prof. Zenaida Bacsafra COLLAGEN Collagen is a protein found abundantly throughout the bodies of animals‚ including humans. It is a very variable protein‚ forming the basis of many connective and support tissues. It is a fibrous structural protein‚ with a distinctive structure. In fact‚ collagen makes up about one-third of the total body weight. Its name is derived from the French word for glue. Collagen fibers‚ which resemble microscopic
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