involves using a nichrome wire loop to introduce a sample into a quiet blue Bunsen flame. Many cations show characteristic colours. The nichrome wire is easily contaminated and was cleaned by dipping it into concentrated hydrochloric acid and heating vigorously with a roaring Bunsen flame. The wire is clean when it gives no colour with the flame. Result of flame testing cations: |Cation Tested |Colour of Flame
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Write up for Qualitative Analysis 1. Introduction- This experiment is for qualitative analysis so we are trying to find out what is in a substance. In this case we are using the flame test to try and discover what is in 4 unknown sample solutions that we have been given this is done by cross referencing the colour of the flame with 6 known solutions we test beforehand. Aim- In this experiment we are attempting to distinguish what substances are in the 4 unknown solutions by cross referencing
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REVISED A01_REND6289_10_IM_FM.QXD 5/7/08 12:57 PM Page i Instructor’s Solutions Manual Quantitative Analysis for Management REVISED A01_REND6289_10_IM_FM.QXD 5/7/08 12:57 PM Page ii REVISED A01_REND6289_10_IM_FM.QXD 5/7/08 12:57 PM Page iii Instructor’s Solutions Manual Quantitative Analysis for Management Tenth Edition Barry Render Ralph M. Stair Jr. Michael E. Hanna Michael E. Hanna University of Houston-Clear Lake Upper Saddle River‚ New Jersey 07458 REVISED A01_REND6289_10_IM_FM
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Lab report is one way we used during of after an experiment in a laboratory to subtly record and discuss the experiment. During a lab‚ we sometimes can observe only the physical part of the experiment‚ or may be some visible chemical changes. These changes indicate that the experiment we do is successful or not. However‚ in order to understand and achieve more from just simply doing the experiment‚ we write lab report to more profoundly understand the internal meanings of the experiment we do‚ and
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Analysis of Food Dyes in Beverages Samantha Sequito and Anna Steenland Lab Performed: December 3‚ 2013 Lab Due: December 13‚ 2013 Introduction: Different amounts of FD&C Blue I were diluted with water to make eight differently concentrated 10 mL solutions. Samples were placed in the spectrophotometer to determine the percent transmittance of FD&C Blue 1. All of the data was summarized in graphs to predict the concentration of FD&C Blue I in a sample of Gatorade.
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Roy Levin Bio 11 Lab Dr.Izquierdo Analysis of Macromolecules in Tissue Homogenates of Bos taurusMaterials and Methods The homogenates provided were made by homogenizing tissues in a sucrose phosphate buffer in a 1:20 ratio. The protein concentration in bovine cells was measured by diluting the homogenate with a 1:5 ratio; 50 microliters of homogenate and 200 microliters of water. Then 5 known protein concentration samples which were 0.4‚ 0.8‚ 1.2‚ 1.6‚ 2.0 mg/ml of bovine serum were used to
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Lab Report: Halogen Reactions Purpose: This experiment will allow for exploration into some of the properties of Group 17 elements (halogens) and their compounds. More specifically‚ the solubility properties of these halogens will be used to predict their reactions. The relative electronegativities of the halogens will be determined. Halides‚such as Cl-‚ Br-‚ and I- will be used to make these determinations. Because this lab is qualitative rather than quantitative‚ there are no calculation
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mass‚ volume‚ density and time using different scientific tools and methods. Precision‚ Accuracy‚ etc. would be utilized from the past learned skills and applied to future labs while working on calculations. EXPERIMENT: Throughout physics(labs)‚ measurements are determined with help of experimental data manipulation. In the lab it is detrimental to know how to measure length‚ mass‚ and time in accurate and precise manner. MATERIALS: • 3 Box-like objects (block‚ thick book‚ shoebox‚ etc
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Criteria 6 8 10 Title Your lab report has a Title that is directly related to the lab experiment/ exercise. Your group or class must be able to come up with your own title You must make your own title based on scientific theory Aim You have clearly stated your aim Your aim is relevant and informative You must make your own aim based on scientific theory Background background information relevant to the lab experiment/ exercise You must be able to link your aim to the background The
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In cation exchange chromatography‚ a negatively charged resin is used. A commonly used resin is Dowex‚ which contains linked sulfonate groups that contribute to its negative charge. As a solution is passed through the resin‚ molecules that exhibit greater positive
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