heating a solid until it passes directly from the solid phase into the gaseous phase. The reverse process‚ when the vapor goes back to the solid phase is called deposition. 2. Extraction. This uses a solvent to selectively dissolve one component of the solid mixture. With this technique‚ a soluble solid can be separated from an insoluble solid. 3. Decantation. This separates a liquid from an insoluble solid by carefully pouring the liquid from the solid without disturbing the solid. 4.
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HILAIRE BARNETT SEPERATION OF POWERS ‚ Introduction * The separation of powers is a doctrine which is fundamental to the organization of a state – and to the concept of constitutionalism – in so far as it prescribes the appropriate allocation of powers‚ and the limits of those powers‚ to differing institutions * Three essential bodies exist: the executive‚ the legislature and the judiciary * The essence of the doctrine is that there should be a clear demarcation of personnel and
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from a Solid Mixture by Liquid-Liquid Extraction Introduction Liquid-liquid extraction is a technique used to separate chemical substances in order to purify or identify the various components of a mixture. Flavors‚ spices‚ perfumes‚ and medicines are just some of the everyday things that are extracted from plants and other natural sources [1]. The basic principle used to carry out this separation is the mixing of two liquids that are immiscible with each other. This creates layers of liquid‚ which
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Separation Of a Sample Mixture By Liquid-Liquid Extraction Reading assignment: Techniques in Organic Chemistry 2nd ed pages 75-99. 3rd ed pages 113-140. Topics and Techniques i) identification of solvent layers of two immiscible solvents ii) partioning of a compound between two immiscible solvents and determination of KD iii) liquid-liquid extraction with aqueous acids and bases with organic solvents. iv) use of drying agents Introduction Liquid-liquid extraction is a method used for the
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Experiment 3 Liquid-Liquid Extraction Discussion The success of extracting each compound out of the solution can be seen in the IR graphs for each substance. For ethyl 4-aminobenzoate‚ the N-H‚ C=O and C-O are distinguishable in their proper wavenumber positions. The amino N-H stretch was found between 3224 cm-1 and 3423 cm-1. The C=O was found at 1681 cm-1 and the C-O was at 1280 cm-1. The IR for benzoic acid also displays its significant bonds‚ O-H and C=O. The O-H was between 2566 and
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sedimentation‚ widely known as Stokes’ law. It states that a particle moving through viscous liquid attains a constant velocity or sedimentation rate. Equation for Stokes’ law Vg = d2 (Pp- P1)/ 18 µ × G Where:- Vg = Sedimentation Velocity d2 = particle Diameter Pp = Particle density P1 = Liquid density G = gravitational acceleration µ = viscosity of liquid Aims:- 1. To separate cream from full cream milk at two speed settings of the disc bowl
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Friction Peter Jeschofnig‚ Ph.D. Version 42-0262-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information
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General Chemistry 1 Lab 4 Properties of Gases LabPaq - Properties of gases General Chemistry Introduction Background This report covers Properties of Gases and will allow me the opportunity to explore chemical and physical properties of gases. Collection and use of these gases will also be conducted in this lab. Statement of Problem Collecting gases is a difficult process. Singling out a gas and obtaining only that gas is the challenge we face in this experiment. Purpose
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Part A: Diffusion on a liquid in a liquid. I did an experiment with three different glasses of tap water from the faucet. All three cups measured the same which happened to be 13 cm from the top of the cup to the bottom of the cup. I let the water settle‚ and sit for about an hour so the temperature was the same for all three cups. I then placed one drop of food coloring into the first glass and waited for the coloring to reach the bottom. I calculated 93 seconds. I then went to the second glass
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The northern regions tended to have more religious beliefs. The southern regions tended believe in a church and state separation. According to "The Articles of Agreement‚ Springfield‚ Massachusetts in 1636" (Doc D)‚ whoever entered Massachusetts had to comply with the certain articles and orders that shaped a community around God and the share of the land. The “Articles of Agreement‚ Springfield‚ Massachusetts‚ 1636’’ is valid document because it was basic laws. As a result of “The Articles of Agreement
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