out so that tubes containing a reaction solution of the Amylase enzyme and starch were simultaneously mixed. The reactions were then introduced to I2-KI‚ which stopped the reactions‚ at two minute intervals. Each of these trials was repeated three times to ensure proper accuracy. After concluding the reactions they were placed into a spectrophotometer (A580) for analysis. Graphing the values of the absorbance to time for each pH it was found that the rate of reactions in the neutral pH solutions were
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Aim It is to tell how the reaction between magnesium and hydrochloric acid will be effected if we change the concentration of hydrochloric acid. Introduction In the experiment the magnesium reacts with the hydrochloric acid to create magnesium chloride and hydrogen. The balanced formula for this is: Mg(s) + 2HCL(aq) MgCl2(aq) + H2(g) Magnesium + hydrochloric acid Magnesium Chloride + Hydrogen Magnesium will react with hydrochloric acid‚ because it is higher in the reactivity series than hydrogen
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Science Coursework Trypsin Investigation Aim I am going to prove that temperature effects the rate in which the enzyme Trypsin breaks down milk substrate into amino acids. Investigation "We strongly recommend the use of Vanish Stain Removal Tablets in conjunction with a 900 spin wash at 70°C" This was found on a milk carton of a well-known drinks company‚ Nesquick. The major food group constituent of milk is‚ of course‚ milk. For my Science Investigation‚ I am going to test different temperatures
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The Monastery and The Clock - Rhetorical Essay Time‚ is the indefinite continued progress of existence and events in past‚ present‚ and future regarded as a whole. It can be argued that the steam engine is the most important machine developed in human history. Then again it can be argued that Megan Fox is the most amazing actress of all time. It’s the one who provides the most ethos that will win any argument. One can trace the roots of the Industrial Revolution all the way back to the Middle
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Rabi‚ a physics professor at Columbia University‚ suggests a clock could be made from a technique he developed in the 1930’s called atomic beam magnetic resonance. 1949 Using Rabi’s technique‚ NIST (then the National Bureau of Standards) announces the world’s first atomic clock using the ammonia molecule as the source of vibrations. 1952 NIST announces the first atomic clock using cesium atoms as the vibration source. This clock is named NBS-1. 1954 NBS-1 is moved to NIST’s new laboratories
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Measuring Reaction Rate using Volume of Gas Produced By John Doe 23th October 2012 Introduction An essential element of chemistry is finding reaction rates. This is because chemists need to know how long a reaction should take. In addition to needing to know the rate of a reaction at any point in time to monitor how the reaction is proceeding. Many factors effect reaction rates‚ two shown above include temperature and concentration. Concentration affects the rate of reactions because the
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Factors that Affect the Rate of a Reaction BACKGROUND: Chemical reactions occur at different rates. In this experiment I will consider some of the key factors that influence the rate of a reaction: * nature of reactants - particle size * temperature * catalysts According to the collision theory‚ the rate of a reaction depends on the frequency of collisions between reacting particles. The more frequent the collisions‚ the faster the rate of the reaction. However‚ in order for
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*Bowman’s Strategy Clock *Making Sense of Eight Competitive Positions* (*https://www.mindtools.com/community/pages/article/newSTR_93.htm) In many open markets‚ most goods and services can be purchased from any number of companies‚ and customers have a tremendous amount of choice. It’s the job of companies in the market to find their competitive edge and meet customers needs better than the next company. So‚ how‚ given the high degree of competitiveness among companies in a marketplace‚ does one
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Design lab for the rate of reaction between Mg and H2SO4 Introduction: Increasing the concentration (in moles) of H2SO4 will increase the rate of the reaction when a ribbon of Mg is added to the solution. The rate of the reaction all depends on how strong the concentration of the solution is. Research question: Does altering the concentration of H2SO4 increase the rate of reaction when a ribbon of Mg is mixed with the solution? Variables: Independent Variable: The concentration of
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which non-rational or magical phenomena play a significant part’ (Manlove‚ 1975‚ 1). Following this definition‚ The Cuckoo clock would be classified as a fantasy by several elements in the story. To begin with‚ the story is based on the classic idea of a child communicating with animals or objects. In this case‚ that object would be the wooden cuckoo coming out of the clock. This idea itself is quite a common subject matter for children’s literature. For example in Little Princess‚ the little girl
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