Separation of a Carboxylic Acid from a Neutral Compound by Extraction Reference: Smith‚ Chapter 2 (Acids and Bases) Introduction Carboxylic acids and phenols are two families of organic compounds that contain carbon‚ hydrogen and oxygen‚ and also react with water to yield an excess of hydronium ions over hydroxide ions. Pure water has a pH of 7‚ which means it has a hydronium ion concentration‚ [H3O+] of 10-7 M (M = molarity‚ moles/Liter). The hydronium ions in pure water come from the self-ionization
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The term distance determination corresponds with Forensic Gunshot Residue Distance Determination Testing. Distance determination is the process of determining the distance a firearm was shot from its intended target. The determination process requires the firearm to be test fired from various distances to compare gunshot residue (GSR) patterns made during the test and compared to the ones made on the target. Often times the request for distance determination occurs resulting in the death from a shooting
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Ward (1994) using interview methods in a qualitative case-study design‚ examined the special leadership practices of three elementary school principals while implementing the special education programs. The three principals‚ 2 to 3 of their regular education teachers and the entire special education staff were interviewed by the researcher and the field notes were also used the to complement the interview data. It was found that the principals had three types of leadership actions and beliefs. They
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LS Separation of Mixtures and Solids Purpose: To become familiar with the separation of mixtures of solids Hypothesis: I will be able to separate the materials using a variety of different methods. First‚ separate the iron fillings using a magnet. Second‚ I will put the rest of the solution into water and separate the insoluble sand from the soluble salt and benzoic acid. Third‚ I will filter out the benzoic acid when crystalized. Lastly‚ I will evaporate the water away leaving crystallized
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DETERMINATION OF FRUIT ACIDS BY TITRATION AND CALCULATION OF THE SUGAR/ACID RATIO It is the sugar/acid ratio which contributes towards giving many fruits their characteristic flavour and so is an indicator of commercial and organoleptic ripeness. At the beginning of the ripening process the sugar/acid ratio is low‚ because of low sugar content and high fruit acid content‚ this makes the fruit taste sour. During the ripening process the fruit acids are degraded‚ the sugar content increases and
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Separation of a Mixture of Solids I really enjoyed this lab. After reading the introduction I started by making my own flow sheet of how I thought this lab would work. I was reminded about solubility which is defined as the amount of the solute that will dissolve in a given amount of solvent and that the extent to which a substance dissolves depends mainly upon the physical properties of the solvent and of the solute and to some extent upon the solvent’s temperature. With that being said I came
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Determination of Equilibrium Constants Introduction Bromothymol blue is an indicator for many acid-base titrations. When adding different solutions within the indicator it is to react and change colors‚ in this experiment the different colors were blue‚ green‚ and yellow. In the following experiment‚ obtaining the absorbance levels for each one makes it possible to calculate the equilibrium constant. Materials and Methods For this specific experiment there are a few materials that are crucial
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The purpose of this qualitative study conducted by Heintze et al. (2001) was to examine the concepts regarding the management of obesity in future. Invitation letters were sent to 70 primary care physicians to participate in the study and 15 physicians agreed to participate in the study. Among the overweight and obese patients attended the clinics a total of 123 patients agreed to take part in the study. The patients were provided a questionnaire about the perception of obesity. The process of theoretical
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PRACTICE OF MANAGEMENT ASSIGNMENT Required to identify any 10 scientific tools and explain how five (5) benefits of each tool would enable a manager to achieve effectiveness and efficiency. 1. Computer Computers play a vital role in meeting the challenges of global competitiveness‚ where businesses must be efficient and responsive‚ and must produce high quality goods and services at an even lower cost. Without computers‚ to provide the accurate‚ precise information needed
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Determination. Determination is firmness of purpose; resoluteness also known as a quality that makes you continue trying to do or achieve something that is difficult. In so many stories you see so many people and characters being determined. But especially in the Panyee Football Club movie by TMB Brand‚ the boys learn that through hard work and determination you can achieve anything. Even though the villagers made fun of the boys the boys were determined. The boys ended up forming their own team
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