rate of the Iodine Clock Reaction‚ there was no final percentage error. However‚ Looking at Graph 1.6‚ the line of best fits clearly shows the low precision throughout this experiment resulting in an increase of Random error. This could be due to the many assumptions being made in this experiment. We are assuming that there was no cross contamination between Solution A‚ B and water. Though it is highly likely that someone used the same pipette or measuring cylinder to measure chemicals as all three
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Benedict Arnold was a Revolutionary Hero that had a big affect on winning the war. He had boosted many of the soldiers moral during the war with his successful raids. Moral could be considered a reason for the Americans winning the war because it kept them going through there up and downs. To begin my essay‚ I’ll start it with a brief summary on Arnold‚ so the reader will understand who he really was. Benedict Arnold was born on January 14‚1741 in Norwich‚ Connecticut. His ancestors William
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Prior to his act of treason‚ Benedict Arnold was highly regarded as America’s greatest Revolutionary general. Due to his high rank and excellent performance on the battlefield it seemed most unlikely that Arnold would defect to the other side. "Arnold has betrayed us. Whom can we trust now?" asked George Washington who now felt that no one could be trusted once Arnold had betrayed his country of which he had shown so much love for beforehand. Arnold had been a die-hard patriot who at the Boston Massacre
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Synthesis‚ Spectral‚ and Antibacterial Studies of Silver Nanoparticles and Silver(I) Complex of 2-Mercaptobenzothiazole Abstract : Microbes‚ such as bacteria‚ molds‚ yeasts‚ and viruses‚ in living environment are often pathogenic and cause severe infections in human beings. Therefore‚ there is a pressing need to search for new antimicrobial agents from natural and inorganic substances [1]. Antimicrobial nanoparticles mainly consist of metals‚ metal oxides‚ and many biologically derived materials
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Period 9 Chemical Reactions Chemical reactions happen in almost everything around us. Reactions are very important in everyday life‚ and science. Chemical reactions are the changing of substances to other substances by the breaking of bonds in reactants and the formation of new bonds in products. There are different types of chemical reactions such as combination reaction‚ decomposition reaction‚ single-replacement
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12/29/12 Vocabulary Lesson Six: Exercise 1: 1) Platitude 2) Venerate 3) Hubris 4) Accoutrement 5) Antediluvian Exercise 2: 1) The thief found himself in an imbroglio when he released he did not have any mask on to hide his identity as a thief. 2) Our Sectarian neighbors seldom speak to us because they feel our beliefs differ to strongly 3) The corrupt police commissioner often made the sanctimonious claim that he was doing the right thing to fight crime.
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Measuring haemodynamic variables using different techniques and examining the effects of diving reflex‚ isometric muscle contraction and psychological stress on these variables. Introduction Haemodynamics is the study of factors that determine the movement of blood (Widmaier et al‚ 2011). The main haemodynamic factors are heart rate and blood pressure. Heart rate is defined as the number of times the heart contracts per minute. Normal resting heart rate in adults ranges between 60 – 100 beats
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Objects that are made from silver or coated with it‚ by time‚ start to tarnish. Tarnish is s chemical process that leads to dullness of color of the surface of the metals such as silver‚ gold‚ aluminum‚ iron‚ brass and copper. This reaction mostly happens because of the air pollution and/or moisture. To remove the tarnish from the metals‚ the silver objects must undergo a chemical reaction. Thus this chemical reaction would make the silver object look shiner. The chemical reaction to clean up the
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Experiment 3: Solution Calorimetry: Thermodynamics of Potassium Nitrate II. Abstract A determination of thermodynamic variables of KNO3 is presented. KNO3 was heated and dissolved in varying volumes of distilled water. Upon dissolution‚ the KNO3 solution was removed from heat and the temperature was recorded once crystals formed. For each solution‚ ∆G the Ksp were found with the temperature and molarity values. ∆H and ∆S were found through the linearization of the data with a plot
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Types of Variables Binary variable Obsevations (i.e.‚ dependent variables) that occur in one of two possible states‚ often labelled zero and one. E.g.‚ “improved/not improved” and “completed task/failed to complete task.” Categorical Variable Usually an independent or predictor variable that contains values indicating membership in one of several possible categories. E.g.‚ gender (male or female)‚ marital status (married‚ single‚ divorced‚ widowed). The categories are often assigned numerical
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