strip‚ nothing happened. Adding the Cu strip did not affect the solution or the strip. (Strip stayed orange. The solution was still clear.) When we added the‚ nothing happened. The solution stayed clear and the strip stayed grey. When we added the Ag strip‚ nothing happened. The strip remained light grey and the solution was clear. Zn(NO3)2 aq When we added the Mg strip‚ the strip became dark grey (opposed to the regular grey before) Adding the Cu strip did not affect the solution or
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Pb(NO3)2 0.1M x 0.05L x 331.22gmol-1= 1.6561 g Cu(NO3)2 0.1M x 0.05L x 230.02 gmol-1 = 1.1501 g OBSERVATIONS Mg(NO3)2 Zn(NO3)2 FeSO4 Pb(NO3)2 Cu(NO3)2 Mg Metal Dark tiny substances (presumably Zn metal) dull the surface of Mg ribbon. Solution remains clear Tiny dark chunks of Fe metal formed on Mg surface. The yellow color of solution eventually fades Very small black bits of Pb metal formed on Mg ribbon surface Small amounts of Cu metal bits on Mg surface was observed‚ the intensity
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Section Assignment 3.4 Part F – The Reaction of Iron Nails with a Copper Solution Introduction: The experiment in this activity involves the reaction between a copper (II) chloride solution with iron nails and the mole ratios involved in the reaction. Measurements are taken to determine the moles of each reactant involved in the reaction and thus the number of atoms or molecules involved. Apparatus and Materials: Refer to the reaction of iron nails with a copper solution assignment in Module
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is affiliated with Columbia University’s College of Physicians and Surgeons (CU) and known as NewYork-Presbyterian / Columbia University Medical Center. NYP and CU have joined to create and operate one of the world’s top academic medical centers. This hospital provides world-class treatment in almost every medical specialty. Also
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to be compared in this study are as follows: cysteine‚ Cu (II)‚ silver nanoparticles (AgNPs)‚ and zinc sulfide nanoparticles (ZnS-NPs). The first experiment focused on the reaction between alkaline luminol H2O2‚ the most common luminol solution‚ and cysteine‚ one of the twenty essential amino acids. In this experiment‚ 105 g=mL cysteine solution‚ 2.0 105 mol=L Cu(II) solution‚ and the mixture of 1.0 105 g=mL cysteine with 2.0 105 mol=L Cu(II) were tested. However‚ no
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errors. II. Hypothesis: /3 -If the copper metal is submerged in the silver nitrate solution then in reaction‚ a pure‚ solid (Ag) silver product is created with an excess of (Cu (NO3)2) copper (II) aqueous liquid because a single displacement reaction occurs where the balance equation is then 2AgNO3 + Cu(s) 2Ag + Cu (NO3) 2 III. Materials * 1 pair of gloves * 1 pair of safety glasses * 1 (10 cm) Copper Wire * 1 Plastic container * 1 bottle of 0.50 AgNO3
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this method of analysis was practical in identifying the concentration of Cu(II) solution. ------------------------------------------------- INTRODUCTION The goals of the experiment were to apply the spectrophotometry in the quantitative analysis of copper (II) solutions‚ operate a spectrophotometer and measure transmission properties of solutions‚ and
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Cu(s) + 4HNO3(aq) --- Cu(NO3)2(aq) + 2H2O(aq) + NO2(aq) 2. HNO3(aq) + NaOH(aq)--NaNO3(aq) + H20(l) 3. Cu(OH)2(s)--CuO(s) + H2O(l) 4. CuO(s) + H2SO4(aq)-- CuSO4(aq) +H2O(l) 5. CuSO4(aq) + Zn(s)-- ZnSO4(aq) + Cu(s) At the end of reaction number five we should have close to 100% of the copper we started out with. Result Original Mass of Cu=.452g Mass of Cycled Cu=2.483g 1. In the first reaction oxidation-reduction occurs there were a brown smoke has the Cu dissolves
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Emer is a figure of importance – she is Cú Chulainn’s wife‚ who only would marry a woman equal to him. Emer possessed all the good virtues a wife should have. Emer’s influence can be first found in the tale of The Wooing of Emer. Cú Chulainn is the one after her‚ so she set up some quests form him. If he were successful‚ she would marry him. While it is true that a hero needs to perform dangerous quests to raise his fame‚ he respects Emer proposal and he is true to his word when he promised that
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PSY-310 Dr. Erica St.Germain SNHU Callous-unemotional traits and future offending Callous-unemotional (CU) traits are a known aspect of psychopathic personalities in adults. What this study sought to prove was that CU traits were a predictor of future criminal offending. Although prior criminal history is the greatest predictor of future offending‚ this study showed that self-reported CU traits in elementary age males are “a unique and robust predictor of future offending‚ even after controlling
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