Julie Nguyen Equilibrium Lab 4-28-14 I. Purpose To study the affect of temperature & concentration changes on systems in equilibrium II. Safety Wear apron Wear goggles Do not spill chemicals Clean up after use Wash hands Chemicals are TOXIC (by Britney Spears) III. Procedure A. Iron-thiocyanate equilibrium Pipet .3mL of 1 M iron (III) nitrate and .3 mL of 1 M ammonium thiocyanate. into clean 250 mL beaker. Add 75 mL of DS water. Mix well. Divide the solution into equal
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Density Lab January 24‚ 2014 Benjamin I. Purpose- The purpose of this lab is to identify the unknown substances by calculating the densities of the given substances then comparing those densities to the actual densities on the table given. II. Materials- Graduated cylinders Triple beam balance Unknown substances from bag given by teacher Table of known densities Calculator Water III. Procedure- The first thing one must do to identify which substance is which is to calculate the
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tetraamminecopper(II) ion by colorimetry. Anhydrous copper sulfate (CuSO4) is white‚ which means that it does not absorb light in the visible region of the spectrum. The hydrated copper sulfate (CuSO4 - 5H2O) is blue. The structure of the compound can be represented more accurately as Cu(H2O)4 SO4 - H2O where four water molecules are bound to the copper ion and the fifth is a water of crystallization. The water molecules are arranged at the corners of a square‚ with the copper at the center. Such an arrangement
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Lab Report 1 Introduction: Proper chemical formulas entitle many challenges such as the Law of Multiple proportions that states that there may be more than one plausible mole ratio for the elements in that compound. However if we determine the mass of each element in the compound we will be able to get the true chemical formula. In this experiment‚ we used the law of definite proportions to find the chemical formula for a hydrated compound containing copper‚ chlorine‚ and water molecules
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Joseph Sulaiman Alya Abourezk 4/13/12-4/14/12 Class Action Lab Report Purpose: To determine‚ through observations‚ the identity of substances produced in a chemical reaction. Materials: Safety Goggles Stirring rod Magnesium ribbon Solid CuSO4•H2O Matches Test tubes Copper metal 3M HCl Red and blue litmus strips 0.1M AgNO3 Zinc metal 0.1M Pb(NO3)2 Test tube holder 0.1M KI Bunsen burner 0.1M Na2NO3 Crucible tongs 1.0M NaOH Water (H2O) 0.1M Ca(NO3)2 50mL beaker
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and preparation for the afterlife. Whether it is the Bagisu leaving corpses for wild animals to eat (Beierle 2003)‚ the death taboos of Copper Inuits‚ or Italian Americans carrying a body out of a dwelling feet first so that it cannot see the door and return (Cowell 1986)‚ all cultures must develop methods to deal with the inevitable end of life. The Copper Inuit live in the Canadian Arctic‚ a harsh climate. According to David Damas (1996:1)‚ “Gulfs and straits are ice free for only about 3 months
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This experiment was performed to demonstrate a cycle of chemical reactions involving copper. This lab will start with copper as a reactant in the first reaction through a series of five chemical forms of aqueous phase reactions and ending to calculate the percentage of recovered solid copper as a product in the last reaction of the experiment. The experiment resulted in a percent recovery from the cycle of copper reactions of an increase to 139%. . Introduction: The purpose of this experiment is
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butter product. In this experiment‚ salt was extracted from the aqueous phase of known quantity butter. The following salt content determination was done by Mohr’s titration method with silver nitrate (AgNO3) in the presence of potassium chromate K2CrO4 indicator. The end-point was then spotted when the red silver chromate forms. The amount of salt in butter was obtained by calculation of the experimental result. Method 1. Determination of the concentration of a standard sodium chloride solution
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Chilean Copper Mine Collapse Jason Terry BCOM 275 August 19‚ 2012 University of Phoenix Chilean Copper Mine Collapse In August 2010‚ the world focused on a small copper mine in northern Chile‚ when it was discovered that 33 trapped miners were still alive after the mining shaft collapsed. This tragedy captured audiences of every source of mainstream media around the world. The media reported updates on the conditions of the trapped miners daily until their rescue in October 2010. People
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Flame lab test Chemistry Introduction The lab test performed was to determine characteristic colors that were produced by specific metallic ions that are shown in a flame. This happens when an electron gains energy; the electron moves from an energy level that’s farthest away and to an empty orbital close to the nucleus with higher levels‚ so one of the electrons gives off energy. A flame test is a visual test where the energy is in the form of a color change and the change can
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