separating a mixture by chromatography. • Determine the effects of the mobile phase in separating a mixture by chromatography. • Conduct a separation using column chromatography. In the first week‚ the students will determine the best solvent system for separating a methylene blue/sodium fluorescein mixture by thin layer chromatography using silica gel and alumina as the stationary phase. In the second week‚ the students will separate a methylene blue/sodium fluorescein mixture by column chromatography
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Engineering B45 Concrete Lab Report Introduction: Concrete is a mixture of sand and rock or similar inert material (aggregates) held together by a cementing material. Usually the cementing material is Portland cement‚ but sometimes binders such as asphalt or gypsum are used‚ in which case the concrete may be called asphaltic concrete or gypsum concrete. Properties of concrete are governed not only by the properties of its ingredients (cement‚ water‚ sand‚ and coarse aggregate) but also‚ to a great
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reaction mixture. Operational Procedure: Bulk Polymerization: Styrene polymerizations were performed in a round bottom flask with one open arm. 10 ml (96.015 mmol) of dry‚ oxygen free styrene and 0.2 g (1.218 mmol) of AIBN was added to a 100 ml round bottom flask. The mixtures were then degassed by bubbling through dry N2(g) for 5 minutes. The experimental setup is shown as figure below. The setup of running water is for the purpose of condensing the vapor of reaction mixture back to the
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CALAMANSI (Citrofortunellamicrocarpa) AND ONION (Allium cepa) EXTRACT AS COCKROACH KILLER In Partial Fulfilment of the Requirements in the curriculum For Research II June 2012 Chu‚ Gaitlin Tim‚Annika TABLE OF CONTENTS Page Number Title i Acknowledgement I Abstract II Chapter I: Introduction 1 A. Background of the Study 1 B. Statement of the Problem 2 C
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02/04/2014 CHE 317 Laboratory Experiment #1: Simple Distillation of Two Volatile Liquids Containing Non-Volatile Impurities Introduction: Simple distillation is a commonly used method to separate and purify the mixtures of organic liquids into their original components. Mixtures of two miscible liquids with two different boiling points were separated. Therefore‚ it can be said that the two organic compounds are separated by exploiting the different boiling temperatures of the liquids. Both vaporization
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Simple Distillation‚ Gas Chromatography: Preparation of Synthetic Banana Oil Introduction This experiment gave us the opportunity to work with a variety of new procedures as well as practice procedures that are new to us within the past few weeks of labs. Within the context of the scenario‚ we find that a distilling company that markets a popular banana liqueur is having problems. The banana plantation that they use to create their banana extract was hit hard by a hurricane and their reserves
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5. A mixture of methanol and methyl acetate contains 15.0 wt% methanol. a) Determine the g-moles of methanol in 200.0kg of the mixture. b) The flow rate of methyl acetate in the mixture is to be 100.0 Ib-mole/h. What must the mixture flow rate be in Ibm/h 6. The feed to an ammonia synthesis reactor contains 25 mole% nitrogen and the balance hydrogen. The flow rate of the stream is 3000kg/h. Calculate the rate of flow nitrogen into the reactor in kg/h. 7. A mixture is 10.0 mole%
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adding an immiscible solution to the compound containing n-Propanol‚ the mixture now will have two layer: the Organic and Aqueous layer. The organic layer is the extract needed and its % yield is computed resulting to 58.3% INTRODUCTION Many of the processed foods that you buy today come with an ingredient label that lists "artificial flavors" as one of the key ingredients. Artificial flavors are simply chemical mixtures that mimic a natural flavor in some way. Anything that we smell has to
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Objectives 1. To separate a mixture of an acid and a neutral compound into its component by extraction. 2. To determine the melting point and the yield of the benzoic acid and the unknown sample. 3. To determine the unknown sample whether is is Trimethylmethanol or 1‚2‚4‚5-Tetrachlorobenzene. Introduction Extraction is a process of transferring a solute from one solvent to another. It is usually used to separate one or more components from a mixture. Diethyl ether‚ dichloromethane
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amount of given time. The melting rate isn’t changed by the salt‚ so melting is going to happen faster than the freezing. This makes the ice melt(Frederick A. Senese‚ Why can adding salt to ice water make the ice melt slower?). If the ice and water mixture is cooled‚ the molecules move slower.The slower molecules are more easily captured by the ice‚ and then freezing rate occurs at a greater rate than
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