Thermochemistry: An Ice Calorimeter Determination of Reaction Enthalpy D. F. Nachman 6/23/2010 Abstract: An ice calorimeter was used to study the reaction of magnesium metal and 1.00M sulfuric acid solution: Mg(s) + H2SO4(aq) →MgSO4(aq) + H2(g). We found the experimental molar enthalpy of reaction to be ΔH = –355 ± 17 kJ/mol at 0°C‚ 24% lower than the textbook value of ΔH° = –466.9 kJ/mol‚ reported at 25°C. Introduction Whether a chemical reaction occurs spontaneously or is driven by an outside
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The one thing that separates me from other candidates would be my determination. It has a big impact on my personality and makes me who I am. One way I convey my determination would be my willingness to keep going. overcome any challenge that is thrown at me. My biggest obstacle would be my shyness and nervousness in social situations. My shyness controls every choice I make and has prevented me from doing many things I have dreamed of doing. Even though it may not seem like it‚ I have always wanted
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DATE PERFORMED: JULY 20‚ 2007 SPECTROPHOTOMETRIC DETERMINATION OF EQUILIBRIUM CONSTANT FOR A REACTION ABSTRACT UV-VIS spectrophotometry is one of the most widely-used methods for determining and identifying many inorganic species. During this experiment‚ this spectrophotometry was used to determine the equilibrium constant‚ Keq‚ of the Fe3+(aq)+SCN-(aq)↔ FeSCN2+(aq) reaction. By determining the amount of light absorbed‚ the concentration of the colored FeSCN2+ solution was also quantitatively
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TITLE: Determination of Riboflavin by using UV-Vis spectrophotometry. ABSTRACT: The amount of Riboflavin in various brand of children multivitamins was determine by using UV-Vis spectroscopy instrument‚ the series of standard of riboflavin was prepared in order to determine the amount of the riboflavin in the sample of children multivitamins. The maximum amount of riboflavin was found in the Champs multivitamin that contains 0.1155 mg followed by Chewies 0.1131 mg and Scott’s 0.0672 mg. OBJECTIVES:
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Determination of the Concentration of Acetic Acid in Vinegar Lab Exercise 4 CHEM 1106 9/19/12 Purpose: Standardize a sodium hydroxide solution using a primary standard acid. Determine the molarity and the percent by mass of acetic acid in vinegar by titration with the standardized sodium hydroxide solution. Introduction: Vinegar is a dilute solution containing acetic acid. Since vinegar has a low pH‚ it can be titrated with a base. Titration is a method used in order to ascertain
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The Stolen Generation is a term which refers to the number of Indigenous children who were mostly forcibly removed from their parents between 1900 and 1970’s. It is thought that around 10‚000 children were removed from their homes in NSW alone. They were either placed with white families church missions‚ Aboriginal camps or sometimes correction institutions. They usually received little education and had to work long hours. While the policy was implemented under the guise of being in the best interests
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Quantitative Determination of Sulphate by Gravimetric Analysis Table of Contents: 1. Synopsis 2. Objective 3. Theory 3.1: Summary 3.2: Technique 3.3: Chemicals 3.4: Instruments 4. Procedures 4.1: Precipitation of BaSO₄ 4.2: Washing and Filtration of BaSO₄ Precipitate 4.3: Drying and Weighing of BaSO₄ Precipitate 5. Results and Calculations 6. Discussions 7. Conclusion 8. References 1. Synopsis: This report is written about determining
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DETERMINATION OF VITAMIN C CONTENT IN COMMERCIAL (CENOVIS) TABLET ABSTRACT In this experiment‚ the vitamin C content of a commercial tablet is determined and compared with the manufacturers’ specification. Vitamin C is water-soluble and is an enantiomer of ascorbic acid. (Commercial vitamin C is often a mixture of ascorbic acid and other ascorbates.) Ascorbic acid‚ C6H8O6‚ is a reducing agent that reacts rapidly with iodine (I2). As the iodine is added during the titration‚ the ascorbic acid is
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Check-Point: Patient Self Determination Act HCR/210 PATIENT RECORDS: KEEPING IT REAL December 17‚ 2010 According to the Federal Law‚ The Patient Self- Determination Act requires all health care facilities to provides every patient with informed and consented information about their right to make decisions regarding their health. These are called Advance Medical Directives. Patients are also provided with information about state laws that may impact legal choices in making health care decisions
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Two values present in this story are determination and honesty. Danny shows determination when Ross Pickett‚ his father‚ wants to make Red a varmint dog. However‚ Danny had just talked to Mr. Haggins‚ Red’s owner‚ about dog shows. Danny learns that if a competitor wins‚ it is one mark that proves to the first owner of an Irish setter that they succeeded. This puts Danny to thinking about dog shows‚ Irish setters‚ and mainly Red. He feels that Red was born and made to be a partridge dog and he should
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