Experiment C: Identification and Separation of Dyes by TLC Pre-lab Properties: Ethyl acetate‚ ethanol‚ silica‚ azobenzene‚ azulene‚ 4-(p-nitrophenylazo) resorcinol‚ methyl red‚ bromocresol green (solubilities in water and ethanol) Purpose: To identify compounds from an unknown mixture using TLC Up to 100% of missed points can be recovered from this lab Watch the video: http://www.youtube.com/watch?v=e99nsCAsJrw (MIT) TLC plates are near the main hood DO NOT BREAK CAPILLARY TUBES Keep spots small
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A Report of Experiment 1 Purification and Identification of An Unknown Mixture Aim To separate a mixture of a neutral (ester‚ alcohol‚ ketone‚ aldehyde or ether) and an acidic compound (phenol or carboxylic acid) or a neutral and a basic compound (amine)‚ and to identify the unknown mixture by physical (M.P. or B.P.) and spectroscopic methods (NMR‚ IR and MS). Method The mixture (sample number: 27) was dissolved in 200 mL of CH2Cl2 and then extracted with 10% NaOH. The acid was removed
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Laboratory Report Assignment N. 2 Separation of Eddy Current and Hysteresis Losses Instructor Name: Dr. Walid Hubbi By: Dante Castillo Mordechi Dahan Haley Kim November 21‚ 2010 ECE 494 A -102 Electrical Engineering Lab Ill Table of Contents Objectives 3 Equipment and Parts 4 Equipment and parts ratings 5 Procedure 6 Final Connection Diagram 7 Data Sheets 8 Computations and Results 10 Curves 14 Analysis 20 Discussion
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EXPERIMENTAL PROCEDURE: 1. 2.07 g of the mixture of naphthalene and benzoic acid was weighed accurately on a balance. The mixture was then dissolved in 40 ml dichloromethane and the solution was poured into a separatory funnel. 2. 20 ml of aqueous sodium bicarbonate solution was added to the dichloromethane. A stopper was placed on the separatory funnel and was shaken and pressure was frequently released. The 2 liquids separated into clear layers and the lower layer (dichloromethane layer) was
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The Need for a Separation Between Government and Religion As Benjamin Franklin (One of the founding fathers) once said‚ “When a religion is good‚ I conceive it will support itself; and when it does not support itself so that its professors are obliged to call for the help of the civil power‚ ‘tis a sign‚ I apprehend‚ of it’s being a bad one” (Nord 134). The separation between religion and government‚ also known as “the separation of church and state” has been a controversial topic‚ and has progressively
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Answer Scheme BEB2013 - Malaysian Economy Final Exam Semester July 2005 PART A:SHORT ANSWER QUESTION(30 M) 1. a. differentiate between ‘dualism withnin sector’ and ‘dualism between sector’ When comparing between the two sector : example sector manufacturing – automobile industry which is cleary a mdern sector and fisher where the fishermen normally use small boats‚ home made nets‚ rely on experience to detect areas with good catch instead of using radar and income that varies with season‚ we are
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Childhood Separation Anxiety Abstract This report delves into the connection between childhood separation anxiety disorder and the long-term implications that it may have. To understand the connections I preformed secondary research through “Academic Search Complete”. I found that childhood separation anxiety disorder is connected with serious mental disorders‚ such as anorexia‚ bulimia‚ social phobias‚ depression‚ and behavior disorders. Many studies have shown that childhood separation anxiety
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Title Page Chelsea Maksin Organic Chemistry Laboratory 1 Column and Thin Layer Chromatography: The Separation of Spinach Pigments Russ Hoburg 02/15/2012 Abstract The main goal in doing the column and thin layer chromatography was to separate spinach extract into its components based on polarity and then to analyze the components. The separation of the spinach extract was done using the column chromatography with the wet/slurry packing method. Alumina was inserted into the column to act as
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Mid Term – Question 1 The first step in explaining how the Constitution provides separation of powers and checks and balances is to define the Constitution. A constitution is a governing document that sets forth a country’s basic rules of government and politics. (Lenz & Holman‚ 2016) The Constitution establishes the basic framework of government‚ allocates government powers‚ and guarantees individual rights. (Lenz & Holman‚ 2016) The above description makes it clear that our founding Fathers expected
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the slurry leaching with concentrated operations‚ after leaching the pulp slurry and chemical precipitation should be subject to the solid phase and liquid phase separation‚ in order to meet the requirements of the subsequent operations.Vibrating grizzly feeder The technology selected for the purpose to reach the solid-liquid separation and washing‚ often several times. When washing operations are recycling solid waste solution‚Cement rotating dryer the general cross-flow washing process (that is
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