Equilibrium shifted since there was higher concentration on the product side. 3.Experimental error‚ is hard to differentiate by looking the colours‚ there for it may not be accurate as it was expected. Questions: 1. Cu was completely changed to products‚ and can be observed for cu++ a role that shows that only the scn ion can change the colour. 2. In part I‚ system II the reaction of HNO3 causes a shift for the concentration of H+ was reacting and also observed the reciprocal of the forward
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changes during this experiment. What evidence did you use to decide that something was a chemical change? Give at least two examples of chemical changes you observed. In CuCo3 reacting with HCl‚ which released a light green gas and produced bubbles. Cu(NO3)2 changed to a green and yellow color‚ and NaCl mixed with HCl changed to hold a slightly yellow tint. CuCo3 with NaOH changed to a darker color‚ also irreversible. These are all signs that a chemical change occurred. Classify the following properties
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odor No effect No effect No effect Red litmus paper turn blue White bubbles No effect Cu Brown No odor No effect No effect No effect Red litmus paper turn blue No effect No effect Zn Silver No odor No effect No effect No effect Red litmus paper turn blue Fizzing No effect MgO White Powder smell No effect No effect Strong boil Red litmus paper turn blue Yellow fizz No effect Cu(NO3)2 Blue No odor Turn green No effect No effect No effect Turn green No effect
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this experiment‚ you need two erlenmeyer flasks‚a timer‚ a LabQuest with a temperature probe‚ two beakers‚ ice‚ distilled water‚ starch solution‚ 0.200 M of KI‚ 0.005 M of Na2S2O3‚ 0.200 M of KNO3‚ 0.100 M of K2S2O8‚ 0.100 M of (NH4)2SO4‚ and 0.100M Cu(NO3)2. Students will first mix a specific amount of a combination of different concentrations of instructed chemicals and wait for the mixture to turn blue. During this time‚ students will swirl
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bEAN BAG ISOTOPES:ABUNDANCE AND ATOMIC MASS LAB By: Catriona Whalley Partner: Ming Siegel Due: 1.14.10 Prelab A new atomic theory‚ in which all atoms of the same element are identical to one another and equal in mass‚ was proposed by the scientist Dalton. Although the theory had its flaws and was simple‚ it was revolutionary. Scientists became able to study the actual structure and mass of atoms after the discovery of radioactivity. Soon‚ isotopes were discovered‚ as atoms of the same element
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solution. 10. Give the balanced net ionic equation for the reaction responsible for the shift in equilibrium for this system. Answer: j. (a) a white precipitate is formed (b) caused by the formation of Cu(OH)2 (c) which is described by the equation Cu2+ + 2OH- Cu(OH)2 since ammonia is present as an aqueous solution‚ thus the reacts w/ the hydroxide part to yield
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The headwaters of the Doce River rise in the southeast-east area (SE-E) of the Iron Quadrangle‚ located in south-central portion (C-S) of the state of Minas Gerais (Figure 1). The Iron Quadrangle is historically known as a rich auri-ferriferous province and is a classic region of the world Precambrian geology (Dorr‚ 1959). Its designation results from the area’s planimetric features‚ with a surface area of around 7‚000 km2‚ comprising the most important iron mines of Minas Gerais (Barbosa‚ 1968)
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Human Evolution‚ lengthy process of change by which people originated from apelike ancestors. Scientific evidence shows that the physical and behavioral traits shared by all people evolved over a period of at least 6 million years. A. From Ape To Man Fossils from several different early australopith species that lived between 4 million and 2 million years ago clearly show a variety of adaptations that mark the transition from ape to human. The very early period of this transition‚ prior to 4 million
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Objective: The objective of this lab is to determine and analyze the many chemical qualities of copper ‚ by using many solutions that enable copper to undergo chemical changes that will take copper from a metal back to its original state. This is done using cooper‚ Concentrated HNO3‚ 6 M NaOH ‚ Bunsen burner‚ 6 M H2SO4‚ Mg ribbon‚ and two test tubes. The techniques used in this lab which is cleaning glassware‚ disposing of chemicals ‚ measuring mass ‚ centrifugation ‚ venting gases‚ and test tube
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MINDORO STATE COLLEGE OF AGRICULTURE AND TECHNOLOGY MAIN CAMPUS ALCATE‚ VICTORIA‚ OR. MDO. LOAN ANALYSIS with WEEKLY PAYROLL VISUAL BASIC 6 PROJECT SUBMITTED BY: HAYDEE B. BONSOL BSAEn-II SUBMITTED TO: MRS. JENNY T. FERNANDO INSTRUCTOR According to Matias Arreola in his book ENGINEERING ECONOMY‚ there are many changes that have occurred in the Philippines. Some of changes are: the continuing increase in the cost of materials‚ equipment and labor caused
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