The Basics of NMR Chapter 1 INTRODUCTION [pic] NMR Spectroscopy Units Review [pic] NMR Nuclear magnetic resonance‚ or NMR as it is abbreviated by scientists‚ is a phenomenon which occurs when the nuclei of certain atoms are immersed in a static magnetic field and exposed to a second oscillating magnetic field. Some nuclei experience this phenomenon‚ and others do not‚ dependent upon whether they possess a property called spin. You will learn about spin
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want my employees to be able to use my company to help make their dreams and goals come true. I want them to know as long as they ae willing to learn the jobs there should almost always be higher position waiting to be filled from within the ranks. CH2 LEARNING OUTCOME 1 identify the three key elements of the human resources planning model and discuss the relationships among them. Three key elements Forecasting‚ Evaluating supply‚ And Balance supply and demand. Forecasting is the process of predicting
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Ramirez 1 Juan Ramirez Mrs. Giles Period 2 24 September 2012 The Head Vs. The Heart The sounds of tools and chains clink and jingle not too far off. Slaves are in the fenced off field picking the soft cotton from the dry earth. The dust coming from the path that leads from the big‚ white house to the field gets picked up in gusts of wind making them squint their eyes. The owners of the house are chatting and laughing on their dusty porch sipping on their tea while their children play tag and hide-and-go-seek
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CHAPTER 4 REVISION 1. How many moles of silver atoms are in 0.780 grams of silver? a) 0.78 moles b) 0.00723 moles c) 84.2 moles d) 0.522 moles 2. What is the molar mass of Mg(BrO4)2? a) 312 g mol-1 b) 232 g mol-1 c) 168.2 g mol-1 d) 477 g mol-1 3. What mass of the compound FeWO4 contains 50.0 grams of tungsten (atomic symbol W‚ atomic number = 74)? a) 30.0 g FeWO4 b) 304 g FeWO4 c) 82.6 g FeWO4 d) 188 g FeWO4 d) FeSO4 4. A compound contains 20.2%
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simplest ratio of the atoms of different elements in the molecule. D. It is an integral multiple of the empirical formula. 10. 98 g of a pure hydrocarbon contains 84 g of carbon. Which statements are correct? I. The compound has an empirical formula of CH2. II. The compound has a molecular formula of C7H14. III. Not enough information has been given to deduce the molecular formula. A. I and II only B. I and III only C. II and III only D. I‚ II and III 11. 32 g of a metal‚ M‚ reacts with 8 g of oxygen
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INTRODUCTION Shaving gel is a viscous‚ clear gel preparation which is applied before shaving in order to soften the beard‚ lubricate the passage of razor over the face and moisturize the skin. Gels have cross-linked system which exhibits no flow in steady state. Desired characteristics of a Shaving Gel: * It should be clear and transparent. * It should have thick consistency but flowable. * It should lather easily when applied with brush. * It should give clean‚ fresh and moisturized
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THE BASE CATALYZED CLEAVAGE OF DIACETONE ALCOHOL USING A DILATOMETER The decomposition of diacetone alcohol into two molecules of acetone is catalyzed by hydroxide ions and is an example of an aldol condensation in reverse. O OH OHO 2CH3-C-CH3 CH3-C-CH2-C(CH3)2 The rate of decomposition is first-order with respect to the concentrations of both diacetone alcohol and hydroxide ion: Rate = k[OH-][diacetone alcohol] (1) However‚ since hydroxide ion is a catalyst its concentration remains constant
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Identification of Unknown Organic Compounds by Melting Point‚ Boiling Point‚ and Infrared Spectroscopy Methods and Background The goal of this laboratory experiment was to determine the structure and identity of an unknown solid and an unknown liquid by using elemental analysis‚ index of hydrogen deficiency‚ infrared spectroscopy‚ melting point (for solid)‚ and boiling point (for liquid). In this laboratory‚ we were given unknown solid “C” and unknown liquid “D”. The empirical formula
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Experiment 6 Title: Preparation of bis(acetylacetonato)copper(II) complex Objective: To synthesize the bis(acetyacetonato) copper(II) complex Theory/Background: All metal ions in solution are ’associated’ with water. The water molecules can also be weakly bonded or more strongly as a ligand to form a complex ion‚ and these can also present in solid ’hydrated’ salts of crystallization. E.g Copper(II) nitrate (Cu(NO3) 2.3H2O). A complex ion has a metal ion at its centre with a number
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Khanya Ramey Tuesday Nov. 24 Intermolecular Forces Intermolecular Forces Lab II. Goal: The central goal of this experiment is to depict the intermolecular forces of four different properties of solubility‚ evaporation‚ viscosity‚ and boiling point. The reason for achieving the goal is so we can further understand solubility‚ Evaporation‚ viscosity‚ and the boiling point of liquids. III. Experimental procedures In this Lab there were four different stations to experiment with‚ my partner
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