Introduction:- The primary objective of this experiment is to determine the concentration of an unknown copper (II) sulphate solution. You will be using the colorimeter. In this device‚ red light from the LED light source will pass through the solution and strike a photocell. The CuSO4 solution used in this experiment has a deep green color. A higher concentration of the colored solution absorbs more light (and transmits less) than a solution of lower concentration. [Content Standard B- Structure and
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Determining the unknown concentration of HCl via heat of neutralization of a reaction involving strong electrolytes and weak electrolytes. Myeongwon Lee 20522885 Partner: Frank Wong TA: Afsoon CHEM 120L – Earth Science & Chem 149 Section: 004 Tuesday‚ November 26th‚ 2013 Introduction All chemical changes are accompanied by change in energy and this energy is in form of heat. The energy change of a reaction that happens at constant pressure is defined as heat of reaction or enthalpy change and the
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January 13‚ 2013 Determining the Concentrations of Red Dye in Sodas Abstract The use of red dye #40 is common in various soft drinks today. The labels on these beverages do not specify how much dye we are consuming. We did this experiment to find out which soda uses the most dye. Using a spectrophotometer‚ we measured how much light is absorbed by various known concentrations of red dye. After collecting this data‚ a standard curve was made that correlated the concentration of red dye #40 to
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In conclusion‚ the concentrations and absorbance of the Kool-Aid solution were found. The purpose of the experiment was to develop a deeper understanding of the effect that concentration has on the absorbance of light–which the objective was met. To add‚ another goal of the experiment was to determine the unknown solution’s concentration using the absorbance data recorded. This was concluded to be 0.25 M–most similar to Solution #1. Concentration‚ measured in molarity (M)‚ can be calculated using
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According to the method selected for developing a solution for the project (p. xx)‚ the next step after the AS-IS analysis is the design of alternative solutions. By following this approach‚ different potential solutions can be created and evaluated. In this way‚ a more holistic problem solving process can be achieved‚ and the broader perspective obtained‚ and eventually the best alternative selected‚ when compared to designing only one solution and hoping it will solve the problem. All the benefits
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2013 Determining the Mole Ratios in a Chemical Reaction Introduction The purpose of this lab was to determine the mole ratios of the reactants hypochlorite ion (OCI ) and thiosulfate (S O ) when reacted in a chemical reaction. A chemical equation gives the mole ratios of the reactants and products involved in the chemical reaction. When some formulas of the products are not known‚ experimental measurements can be made to determine those ratios. During this reaction‚ hypochlorite
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Experiment#: 2b Title: Determination of the ASA Content of Aspirin Aim: To determine the Molar Concentration of NaOH and HCl acid used in their Standardization processes and to determine the acetylsalicylic acid (ASA) content in Aspirin. Materials/Apparatus: materials used are the same as that outlined in the laboratory procedure prepared by the laboratory instructor. Procedure: The procedure used is the same as that outlined in the laboratory procedure prepared by the laboratory instructor.
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Truly Lokot English Composition II Dr. Elizabeth S 12 2 2014 TV:Could you be with or without it? Television or TV has been considering people’s favorite technology that helps in a way of communication. Television brings quality of pictures and sounds in every home viewer around the world. Also‚ television might be seen almost everywhere like in the mall‚ hospital‚ school‚ and other places. Besides‚ the name television comes from Greek word tele meaning far‚ and the word videre‚ meaning to
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Determining Effective Orientation and Training Methods Wendy Harms MGT/210 Supervision and Leadership Instructor: Nicole Dinan Aug. 1‚ 2010 Test Your Leadership Style Results My results after taking the leadership style questionnaire were: 17 A x 4% = 0.68% 8 B x 4% = 0.32% The kind of leader that I fell under after the final results was: The Leader Your idea of fulfilling work is to motivate and guide co-workers to achieve their best and to reach common
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Determining Effective Orientation and Training Methods When one thinks of the word “training‚” what comes to mind? [Writing suggestion: Unless in a quote or a title‚ avoid rhetorical questions in academic writing. A good idea is to provide answers‚ not questions] Teaching‚ conditioning‚ practicing‚ and building are a few words to explain it. It goes much deeper than that though‚ and it is necessary during the life of employment
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