We removed the penny with tongs and placed it in a beaker of water, immediately noticing the copper penny was now a bright, metallic silver. Visually it was clear…
This lab is designed to find the mass of copper produced when excess aluminium is reacted with 2.00g of copper salt [Copper (II) chloride decahydrate]. This will be achieved by dissolving the given amount of copper salt in distilled water and then adding in the aluminium rod. The reaction will commence as copper will begin to form on the aluminium. Calculating the percent yield is commonly used in the atom economy of a chemical reaction, which is a measure of the initial substance which becomes the useful product(s). Reactions with low efficiency which generate a great amount of waste and produce a smaller amount of the product desired have low atom economies and therefore a lower percent yield.…
This experiment is to be used to determine the era of which the composition and thus the density of the penny changed, and what the other metal besides copper has made up the composition since 1962. First, ten pennies from three different time periods (1995-1999, 2000-2004, 2005-present) were gathered. All ten pennies from a specific time were weighed together on an analytical balance. Then, a fifty mL graduated cylinder was filled with twenty mL of water, which was recorded as the initial volume. The ten pennies were dropped into the graduated cylinder one at a time so that the liquid didn’t splash.…
Statement of Problem The Ely Copper Mine was declared a superfund site in 2001. Mining activity occurred from 1821 to 1920 Ore body discovered in 1813 Location The Ely Copper Mine is located in East Central Vermont in the rural town of Vershire, Orange County. The site is part of a region referred to as the Vermont Copper Belt, or the Orange Country copper district. Over 30 miles long, the belt runs in a NNE–SSW direction. The Ely Mine is one of three major mine sites in the region.…
Process To Make Copper Coated / Plated Nails 1) Measure out 1/4 cup white vinegar and put into the glass bowl. 2) Add 1 teaspoon salt. Stir salt until it dissolves in the vinegar. 3) Take a penny and submerge it into the vinegar solution 1/2 way for 10 seconds.…
In 1792 the currency of the United States penny was developed. The circle shaped structure was twice the size of the current penny as we know today. The penny was the United States first currency and Benjamin Franklin is to thank for that. The penny represents the foundation of our country and shows how much we have grown as a nation. But there has been a lot of controversy on whether or not the penny should be kept due to the fact it cost more to make the penny than it is to use it as currency.…
Palladium is a chemical element with symbol Pd and atomic number 46. It is a rare and lustrous silvery-white metal discovered in 1803 by William Hyde Wollaston. He named it after the asteroid Pallas, which was it’s named after the epithet of the Greek goddess Athena, acquired by her when she slew Pallas. Palladium. Over half of the supply of palladium and its congener platinum goes into catalytic converters, which convert up to 90% of harmful gases from auto exhaust (hydrocarbons, carbon monoxide, and nitrogen dioxide) into less-harmful substances (nitrogen, carbon dioxide and water vapour).…
Sarah Bounab BQD Experiment 2: Copper/Iron Stoichiometry Abstract: The purpose of the Copper/Iron Stoichiometry lab was to determine which of the two possible iron sulfate compounds formed when reacting aqueous copper(II)sulfate with solid iron metal. The techniques used in this lab were weighing by difference, quantitative transfer, and vacuum filtration. At the end of the experiment it was found that iron was the limiting reactant and iron(II)sulfate was a product of the reaction between 7.0002g of copper(II)sulfate and 2.0101g iron metal which produced 2.3037g of copper product with a percent yield of 100.72%.…
The Copper(II)Carbonate was heated until it completely changed its color. The Bunsen Burner was turned off and the Limewater was immediately poured into the test tube used to collect the gas. Observations were…
In this lab, we carried out a variety of reactions using different chemicals and metals. A chemical reaction is when the chemical state of the substance you are testing rearranges its ionic and molecular structure. One of the reactions we experienced was single replacement, this consists of one ion switching places with another ion to form a new compound. Another reaction we saw was double replacement. In this reaction, two compounds ions are switched to form two new compounds.…
This is shown in the balanced chemical equation by the products of water and the solid copper chloride. The observation of the liquid turning clear represents the water and seeing the particles represents the precipitate. The yield of copper chloride is 1.49 grams. This demonstrates the transformation of the copper hydroxide being converted into regular copper oxide and with the rest of the mass becoming water. The limiting reactant was the copper oxide and the excess was hydrochloric acid.…
Which metals produce similar flame colors (according to your naked eye)? NaCl and NaNo3 both turned the color orange. 2. What metal ions are in the unknown solutions A and B from the barrels on the vacant lot? Clearly, and in detail, explain your reasoning.…
This will dissolve and oxidize copper into Cu2+. The solution was then heated to remove the brown NOx fume. This is necessary since NOx acts as an oxidizing agent and will oxidize I in the redox reaction to be observed. When all NOx fume is removed, H2SO4 was added and the solution was heated until white SO3 fumes appear. The addition of H2SO4 will drives off all nitrogen oxide gas that can interfere with the redox reactions. The SO3 vapor that is observed is an indication that all NOx has been driven off.…
Scientists today know mostly everything there is to know about life on prebiotic Earth approximately four billion years ago, yet, they still do not possess the answer as to how life came to be from inorganic matter. Many question how life could have risen from non-living materials and become as complex as it is. Nobody knows for certain how the transition from inorganic matter to life occurred, however, there are several theories made to explain this transition (i.e. Clay theory, Primordial Soup Theory, RNA World, etc.). Life chemically first arose from inorganic matter due to the environment created by hydrothermal vents, the production of RNA, and clay hydrogels.…
Cyclic Voltammetry of Ferricyanide Analytical Lab 1: 2410L Benjamin A. Battiste Group 2 10/14/15 Introduction: The purpose of this experiment is to use cyclic voltammetry to see how ferricyanide can be reduced to ferrocyanide. Using cyclic voltammetry a calibration curve will be created to determine the concention(mM) of an unknown solution of ferricyanide.…