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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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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alloying additions (Mn‚ Cu‚ Sb and Zr) on microstructure and corrosion of Zn alloys and hot dip galvanised coatings was undertaken. The first part of this thesis focuses on the effect of alloying additions on the corrosion of Zn alloys. The result shows that Mn is the most beneficial addition‚ which can significantly improve the resistance of Zn. The effect of Cu depends on its concentration. A high level of Cu addition has a deleterious effect on the corrosion resistance as the Cu-rich particles are
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Money Supply CU - currency held by household and firms D - Deposits held by HF M - Money Supply H - Monetary Base RE - Reserves of Charted bank. These are the currency held by chartered banks plus the deposits of chartered banks at the central bank. rD - reserves to deposit ratio c - currency to deposit ratio rD = RE/D < 1 c = CU/D < 1 M = {(c + 1) / (c + rD) * H } m m > 1 We now want to study how the central bank can affect H and therefore M To do this we need to understand
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Laboratory report Aluminum Copper Alloy MSCI 300 – Thermodynamics of Materials Alexandre de Freitas Silveira Eau Claire December 18th‚ 2012. Abstract: At this experiment‚ the composition of an alloy of Aluminum Copper was analyzed via X-Ray Fluorescence. From this‚ it was possible to construct a phase diagram a make some predictions about the possible phases presents at considering the 3 samples used in this experiment‚ the samples prepared at this experiment the sample as delivered
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The essence of psychopathy is characterized as a personality disorder that affects the normal cognition and the prospective features of the brain. This abnormality has been shown to produce: lack of empathy (including guilt)‚ shallow affect‚ consistent manipulation of others in addition to premeditated violent antisocial behaviour (Brook‚ Brieman‚ & Kosson‚ 2013; Ly et al.‚ 2012; Viding‚ McCrory‚ & Seara-Cardoso‚ 2014). Psychopaths are unpredictable; their inability to anticipate or comprehend the
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Hernandez | | | | | | | |Zn |Mg |Cu |Pb | | |(+) clear liquid but the |(+) a black spot appeared on|(-) no reaction occurred |(-) no reaction | |Pb(NO3)2 |Zinc itself
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