arranged in order of their reactivity based on displacement reactions‚ reduction of their oxides by hydrogen or carbon‚ the relative ease of decomposition of their compounds and reactions with oxygen‚ dilute acids and water. The higher up a metal is in the reactivity series‚ the more reactive it is. In the experiment conducted‚ the three metals‚ magnesium‚ zinc and copper each had to undergo displacement reactions and reactions with water‚ oxygen and dilute acids‚ to arrange them in the order of their
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High School Students’ Conceptions about Energy in Chemical Reactions (focusing only in exothermic and endothermic reactions). Aim The aim of this study is to investigate students’ understanding of the energy concept in chemical reactions particularly in endothermic-exothermic reactions. Both qualitative and quantitative methodology was used for this investigation. A twenty-item multiple choice test was developed about the topic to measure the students’ understandings. This concept test was
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Chapter 8 The Economic Order-Quantity (EOQ) Model Leroy B. Schwarz Purdue University The economic order-quantity model considers the tradeoff between ordering cost and storage cost in choosing the quantity to use in replenishing item inventories. A larger order-quantity reduces ordering frequency‚ and‚ hence ordering cost/ month‚ but requires holding a larger average inventory‚ which increases storage (holding) cost/month. On the other hand‚ a smaller order-quantity reduces average inventory
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Philippines economy nowadays portraits a good start for‚ as we are lifting our country from the previous economic situation. Not including the whole world economy‚ we are experiencing a smaller amount of problems in our economy than the recent. The rate of exchange between our Pesos against the Dollar is going stronger from now and as some bank company said that it could reach as high as ₱37.50 in the next year. This is worthy for our country that it could raise the percentage to lessen the financial
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1 Media Reaction: Immigration Proposal Kellee-Ann Simeus SOC/215 4-9-12 Colleen Hall-Patton 2 Media Reaction: Immigration Proposal * Illegal immigration has been a problem in the United States since the late nineteenth century. A federal law was passed barring entry to all convicts and prostitutes. Before then‚ immigration was scarcely controlled. Over centuries different laws were passed in attempt to get the situation under control. Once the Immigration Law passed‚ legal immigration
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REACTIONS OF HYDROCARBONS Vanessa P. Manibpel De La Salle University - Dasmariñas ABSTRACT Five substances namely Hexane‚ Eugenol‚ Unknown hydrocarbon 1‚ Unknown hydrocarbon 2‚ and Acetylene gas was used for the selective reactivity of hydrocarbons to functional group tests; Bayer’s test‚ Bromine test light‚ Bromine test dark‚ and Tollen’s test. In Bayer’s test‚ only Acetylene‚ Eugenol and Unknown hydrocarbon 2 reacted positively and the rest retain the purplish color of KMnO4. On the other hand
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Media Reaction SOC/315 July 10‚ 2014 Introduction Immigration issues are not only in the United States and are as different as our cultures and the ways that they affect our people. Media reaction show some shared political and public views‚ however there are some factual information that may alter the views of its audience. To help address some questions about the Medias reactions concerning immigration‚ we will use the media piece from the website: Los Angeles Time Politics
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Week 10: Oxidation and Reduction Reactions: The Reactions of Copper Data: Part I: Preparing a solution of copper (II) nitrate Initial mass of copper wire: .520g Mass of copper wire after vigorously scouring: .518g Observations of Copper (II) ribbon mixed with HNO3: Solution turned green. Thick brown gas formed. Copper (II) bubbled vigorously. Cu (II) dissolved‚ solution appeared green/blue. After the addition of H2O a blue crusty precipitate formed. Part II: Synthesis of solid copper
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Lab #4: Aqueous Reactions Introduction: In this experiment we studied the two different types of aqueous chemical reactions‚ double replacement and single replacement. In a double replacement reaction one or both of the products is an insoluble ionic compound or otherwise known as a precipitate; or a non-electrolyte; or a gas. In a single replacement reaction there is typically a metal and an ionic compound consisting of a metal cation and a non-meatl anion. Singel replacement ractions occur when
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6/25/2014 Philosophy 201 Reaction to Kant Kant Kant first draws close to differentiating between a moral choice and a prudent choice. A prudent choice is a choice used in good judgment and is rational. Kant has no interest in morality being rational. A law is a law and thou shall obey it. The moral law is absolute. Thou shall not lie‚ means exactly what it says‚ thou shall not lie. No ifs‚ ands or buts about it. There is no reason why a person should lie because it is our duty as moral
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