| Determination of the Critical Micelle Concentration | | | | Introduction: Purpose: The purpose of this experiment is to use the Conductometric method to determine the critical micelle concentration of SDS. Materials and Equipment: * SDS- Sigma Aldrich‚ Lot: 38H0080‚ S/N: L-439‚ * NaCl- Food grade Great Value * SDS 20% solution- Fisher Biotech‚ S/N: BP1311-200‚ Lot: 468059 * Wave generator- Pasco Scientific‚ S/N PI-9587C * Ammeter- Keithley Auto-ranging
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Chilean Copper Mine Collapse On August 5‚ 2010 at San Jose mine in northern Chile a cave collapsed trapping 33 miners more than 2000-feet underground (Weik‚ n.d.). This should have been just another day‚ a normal 12-hour shift at work‚ but it instead it turned into a 69 day nightmare. Minors did not know it would be the last time for nearly two months they would see the light of day. Miners‚ much like fire fighters and policemen‚ know there is a risk in the work they do. Their families also know
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North American Electro-Deposited Copper Foil Jonathan Blaber Prof. Warren 09 December 2010 Table of Contents: 1) Introduction 3 2) Supply 4 3) Demand 6 4) Equilibrium 8 5) Neighboring Markets 9 6) Competition 10 7) Imperfections
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is used to measure amounts of heat transferred to or from a substance.2 The difference of temperatures was used to calculate the heat energy given off by each sub-reaction. These values were solved by using Hess’s Law which determined the overall enthalpy changes of the neutralization reaction and MgO formation. Hess’s Law states that the heat evolved or absorbed in a chemical process is the same whether the process takes place in one or in several steps.1 If this experiment were to be completed again
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Alchemist‚ Santiago embarked on a journey that he would have never completed without determination‚ courage‚ and love aiding him along the way. If Santiago had not possessed these traits‚ he would have never been able to fulfill his dream. An examination of his journey reveals the importance of determination‚ courage‚ and love in Santiago’s life. One of Santiago’s defining qualities was his determination. Santiago was determined to pursue his personal legend which he saw in his dream. Also
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Installing 70/30 copper nickel (cuni) pipe sometimes can be a test of human patients‚ mechanical knowledge‚ and dexterity. It is‚ however‚ well worth the effort‚ because once you complete the job whether you’re a novice or connoisseur of the art you gain a sense of pride for a job well done. Additionally‚ you will have confidence in knowing that your pipe will stand the test of time and vigorous challenges they’re used for. The only problem that comes with working with 70/30 cuni pipe is‚ having
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data beneath each product and reactant except H20‚ and a summary. The purpose of this experiment is to observe the qualitative aspects of a series of reactions involving copper. Procedure 1.Measure about 1g of solid copper. 2.Place Cu in Erlenmeyer flask and place flask under fume hood. 3.Add dropwise 15M HNO3 until solid copper is completely reacted. 4.Place flask in water bath. 5.Add 4M NaOH slowly until no more solid forms. 6.Mix contents by slowly swirling flask. 7.Place flask back in water
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changes in temperature. The changes in temperature were to be used to find the amount of heat released or absorbed. EXPERIMENTAL Reference """""""""""your website with your information""""""" RESULTS Calculation Calculation for determination of q: q = ms∆T Hess’s Law-type calculation ΔH = ΔHproducts – ΔHreactants J = g x [ J / ( g x ° C ) ] x ° C Calculation for Heat Change q=60g(160g*4.4c) =(60g*4.18J)/4.4j =1104.56 Joules CLASS TABLE part I
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Chilean Copper Mine Collapse BCOM/275 4/14/14 Randall Savely August 5 2010‚ 33 miners were trapped 2400 feet underground in a northern Chilean copper mine. For 17 days there was no way of knowing if any of the miners were still alive. A drill sent down by a rescuer came back with a message from the workers notifying them that they were all alive‚ but limiting in supplies. Rescuers then planned on sending supplies‚ such as‚ food‚ water‚ medicines‚ etc‚ expecting several
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Emilia Monroe August 27‚ 2014 Experiment #01 The Determination of the Percent of Water in a Compound CHEM 1315-022 For experiment one‚ The Determination of the Percent of Water in a Compound‚ the sole purpose of conducting this experiment was to determine the percent of water found in compounds such as Magnesium Sulfate‚ Copper Sulfate‚ and so on. Along with determining the percentages of the hygroscopic compounds the experiment allowed for the exploration of separation of hydrogen bonds
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