SNC 2D Conservation of Mass Lab Activity Purpose: The purpose of this activity is to investigate whether mass is conserved during chemical reactions. Hypothesis: Write a hypothesis predicting whether or not the mass will be conserved during a chemical reaction. __________________________________________________________________ __________________________________________________________________ Materials: Safety Goggles 250mL Erlenmeyer flask plus rubber
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Terms and Conditions for rental of portable toilet units from Lone Star Johns, hereafter referred to as “LSJ” This is a legally binding service agreement for all Portable toilet units required at the project for its duration. This term hereof shall begin on the effective date and shall end when the portable toilet units are no longer required at the project of which the service address is a part. The portable toilet units leased hereby may ne moved to another project of the Customer if it is in
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Copper-catalysed selective hydroamination reactions of alkynes Shi-Liang Shi and Stephen L. Buchwald* The development of selective reactions that utilize easily available and abundant precursors for the efficient synthesis of amines is a long-standing goal of chemical research. Despite the centrality of amines in a number of important research areas, including medicinal chemistry, total synthesis and materials science, a general, selective and step-efficient synthesis of amines is still needed. Here, we describe
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4188 REV: NOVEMBER 30, 2011 V. KASTURI RANGAN SUNRU YONG Soren Chemical: Why Is the New Swimming Pool Product Sinking? Jen Moritz grimaced as she reviewed the February 2007 sales report for her company’s new Coracle product. In September 2006, Soren Chemical had launched Coracle, a new water clarifier for use in small recreational and household swimming pools. Moritz was responsible for marketing the new clarifier, which she believed was a superior product, but the results so far were discouraging
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Geography 101 University of Mississippi FAll 2010 Final exam: essay questions Please prepare a typed answer to each of the two essay questions below. Your answers are due in class on the day of the scheduled final exam. Each essay question is worth 30 points on the exam (total of 60 points). Answers for EACH question should be at least 500 to 750 words (2-3 pages). NOTE: you may not use the same example for different essay questions. Please be diverse in the examples
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Lab #1 Reaction Kinetics in Redox Reactions Procedure: Step 1: Prepare solution of sodium thiosulfate, place 0.25gm (250 mg) of Na2S2O3 in 100ml beaker, add 20 ml of water and mix until dissolved. Step 2: Prepare solution of potassium iodine. Add 10 gm of KI to a 100 ml beaker and add 20 ml of water and mix until dissolved. Step 3: Obtain a 600 ml beaker, add KI and Na2S2O3 solutions, then add 60ml of 1M HCl. Step 4: Finally add 50ml of .1M H2O2, as soon as the H2O2 is added start
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Name: Date: Total Mark: ______/20 Total Mark: ______/20 Covalent Bonding & Molecule properties (H) Questions Q1. The table shows some properties of six compounds. compound | melting point / °C | boiling point / °C | solubility in water | electrical conductivity of solution | copper sulfate | 200 | decomposes | soluble | high | hexane | –95 | 69 | insoluble | does not dissolve | hydrogen chloride | –112 | –85 | soluble | high
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FOSC 610: SCIENTIFIC WRITING ASSIGNMENT 2: CONSENT FORM AHADZI PRISCILLA FATHIA (10309479) CONSENT FORM Title: Effect of institutional sensory test location and consumer attitudes on acceptance of foods and beverages having different levels of processing. Principal Investigator: Laura Melo Address: Department of Biochemical Engineering, School of Chemistry. Federal University of Rio de Janeiro, Brazil. General Information about Research You have been invited
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called chemiluminescence. Chemiluminescence is the direct production of light as the result of a chemical reaction with little or no heat produced. The glow sticks can operate by causing two chemicals to mix. A common reaction used for these devices are hydrogen peroxide and phenol oxalate ester. The hydrogen peroxide is kept in a thin small glass vial in the middle of the stick, and the second chemical phenol oxalate ester is in the main body of the light stick. Bending the light stick in the middle
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Tapered legs are used by woodworkers to build tables, chairs and various other projects. Cutting tapers on legs is a simple procedure that includes using a table saw and a plywood jig. Once you have the jig, it can be used again and again to produce matching tapers on as many legs as needed. When you make different sizes for different legs, you can hang the jigs on the wall and then they will be available for future projects. Things you will need: Wood glue, 2 pieces hardwood, 1 1/4-by-2 1/2-by-36
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