Mathematical Connection Mathematics has had an incredible impact on technology as we know it today. Understanding this impact aids in understanding the history of how technology has developed so thoroughly and what significant events happened to facilitate such an advanced society. A better understanding can be derived by analyzing the historical background on the mathematicians‚ the time periods‚ and the contributions that affected their society and modern society as well as specific examples
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b) 4‚ on the right c) 4‚ on the left d) 5‚ on the right e) 2‚ on the right (There is one water molecule produced per formula unit of Pb(OH)42− as well.) 5- Write the net ionic equation for the redox reaction that occurs in the voltaic cell with a Cu(s)/Cu2+(aq) electrode and a
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THE CUSTOMS UNION OF BELARUS‚ RUSSIA AND KAZAKHSTAN: GRAVITY MODEL APPROACH TO ESTIMATION OF TRADE FLOWS CHANGES by Tauhen Dzianis A thesis submitted in partial fulfillment of the requirements for the degree of MA in Financial Economics Kyiv School of Economics 2012 Thesis Supervisor: Professor Oleksandr Shepotylo Approved by ___________________________________________________ Head of the KSE Defense Committee‚ Professor Collier Irwin __________________________________________________ __________________________________________________
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using stoichiometry‚ accurately measure the reactants and products of the reaction‚ determine the actual yield vs. the theoretical yield and to calculate the percent yield. The equation that will be used is: Ba(NO3)2 (aq) + CuSO4 (aq) → BaSO4 (s) + Cu(NO3)2 (aq) Method 1. Gather materials needed for experiment which included: a. Small test tube with lip b. Large beaker c. Small graduated cylinder d. Large graduated cylinder e. One 9in balloon f. Citric
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half-equations given the species involved in a redox reaction. Example: Zn + Cu2+ → Zn2+ + Cu Oxidation: Zn → Zn2+ + 2e Reduction: Cu2+ + 2e → Cu 9.2.2 Deduce redox equations using half-equations. Example: NO3- + Cu → NO + Cu2+ 1. Balance atoms other than H and O Cu → Cu2+ NO3- → NO 2. Balance O by adding H2O as needed NO3- → NO +2H2O 3. Balance H by adding H+ as needed 4H+ + NO3- → NO +2H2O 4. Balance charges by adding e Cu → Cu2+ + 2e 3e + 4H+ + NO3- → NO + 2H2O 5. Equalise electrons in half equations 3Cu
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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 (II) hydroxide Observations of Copper (II) nitrate when added to sodium hydroxide: a precipitate formed
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Don’t Judge a Book by its Cover Throughout the play “A Doll’s House” by Henrik Ibsen there is a constant evolution of characters and their appearances. At first Nora seems like a child but we find out at that she is a smart and independent woman. Helmer seems like a courageous and smart man but we find out he is a coward when his name is on the line. Krogstad seems like a manipulative man but we soon realize he is full of love and compassion. Because of the way these characters change throughout
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Calitatea produselor ARCTIC a susţinut exportul‚ compania având în aceste ţări parteneri de afaceri pe termen lung. Obiectul de activitate este reprezentat de conducerea şi comercializarea produselor şi lucrărilor aferente industriei frigului; vânzarea cu amănuntul prin subunităţile proprii (reprezentanţe Service‚ magazine‚ puncte de desfacere) din întreaga ţară; promovarea şi punerea în aplicare a iniţiativelor de interes naţional în domeniul fabricaţiei de frigidere‚ congelatoare şi combine frigorifice
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000 E 2005 Recunoasterea brandului 13.000.000 E 1.2. Obiectul de activitate Domenii de activitate principale Cod CAEN 52***** Obiect Activitate Aceasta clasa include: - vanzarile cu amanuntul‚ prin magazine specializate‚ ale articolelor si aparatelor electrice de uz casnic; - vanzarile cu amanuntul‚ prin magazine specializate‚ ale aparatelor de radio‚ televizoarelor si ale aparatelor de
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The balanced equation of the reaction was Cu(s) + 4HNO3(aq) -> Cu(NO3)2(aq) + 2NO2(g) + 2H2O(l). This is an example of a redox reaction since metal copper was oxidized from Cu to Cu+2 and nitrogen was reduced with an oxidation number of +5 to +4 after the reaction. The redox reaction can also be identified by how the reaction began first with an element‚ copper
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