Lab #3 Separating Metal Cations by Paper Chromatography Introduction/Purpose: In chemistry‚ it is important to effectively analyze the components in a given mixture. In order to do so‚ chemists will analyze a mixture either qualitatively or quantitatively using different methods and equipment. Qualitative analyses are subjective‚ and only gather “non-numerical” data such as the color‚ appearance‚ and smell of the components. This data
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TASK 4A Explain why it is important when producing pharmaceutical products ready for consumers to prepare standard solutions and to carry out titrations accurately in a quality control laboratory. D1 Standard solution First of all a standard solution is a solution with the accurately known concentration. The unit of concentration is mol dm–3. [4]If we didn’t have standard solutions‚ we would be calculating information which is wrong of the solutions used for pH‚ absorbance‚ etc. if we didn’t have
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Abstract Pigments extracted from different greens have different polarities and may be different colors. Mixed pigments can be separated using chromatography paper. Chromatography paper is able to separate mixed pigments due to their polarity and solubility. Pigments of chlorophyll a‚ chlorophyll b and beta carotene will be separated on chromatography paper because each has its own polarity and solubility‚ which results in different distance traveled up the paper. Beta carotene is non-polar so it
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Win Sandy Oo English 1A Porter RODRIGUEZ’S EXPERIENCE IN THE IMPACT OF CULTURAL SEPERATION IN PERSUING EDUCATION AND THE RESULT ON WHAT HAD GAINED AFTERWARDS From the essay The Achievement of Desire by Richard Rodriguez what Rodriguez had experienced help him pointed out the fact that cultural difference separates him from his family but later‚ education helped him realized the separation and the valuable thing he had missed in life‚ his family. Rodriguez had a hard time adjusting
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Examining Diffusion and Osmosis Introduction: Purpose: 1. To simulate and observe the diffusion of solutes and the osmosis of water through a semipermeable membrane through color change and sugar tests. 2. To speculate osmosis occurring in dialysis bags and potato cores by comparing percentage change in masses. Background information: Molecules are always in random‚ constant movement due to their kinetic energy. This causes the molecules of a cell to move around and bump into each other
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Importance of Sacrifices By The Curious Incident of the Dog in the Night-Time Have you ever felt lonely? Not understood? In the book The Curious Incident of the Dog in the Night-Time by Mark Haddon‚ Christopher Boone‚ the main character‚ faces the same situation everyday from not being able to communicate with others properly to not understanding people. Christopher has these social problems because he has an unstated form of autism‚ a condition that makes parents work harder and put in more
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subjugated into slavery at the age of thirty. Northup was lured to travel to Washington‚ D.C. in 1841 with the false promise of gaining easy employment‚ quick money‚ and adventurous trips. He was offered money that was three times more than his monthly income and because his wife and children had gone to another town for three weeks‚ he felt it would be more productive to work in this time period‚ rather than sitting ideal and waiting for the return of his family. But little did Northup knew that
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Chapter 16 Study Guide 1. 462 Hermeticism – An intellectual movement beginning in the 15th c. that taught that divinity is embodied in all aspects of nature; included works on alchemy and magic as well as theology and philosophy; influenced leaders of Scientific Revolution‚ cont. into 17th c. 2. 463 Ptolemy – came up w/ Ptolemaic conception of universe: concentric spheres fixed around an unmoving Earth‚ in the order of moon‚ Merury‚ Venus‚ the sun‚ Mars‚ Jupiter‚ Saturn‚ and fixed stars‚ beyong
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Psychology Classical Conditioning ( John B Watson) 1.) Conditioned Emotional Response: (CER) Classical conditioning of emotional psychology E. Classical Behaviorism Watson & Rayner CER in infants (little albert B.) A.) UCS= loud noise (strike hammer one steel bar) B.) UCR= fear C.) CS= White rat (neutral stimulus) Operant Conditions A.) Psychology strengthened or weakened on the consequences that follow it B.) B.F. Skinner (1904-1990) C.) Basic components in operant conditioning
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Empedocles is a widely known Greek in the world of philosophy. He became famous for his theories‚ his works on nature and on his wild antics he would preform and preach about thinking that he was a God. Everyone had an opinion about Empedocles‚ whether as a genious or a kook. Aristotle hailed empedocles as the inventor of the rhetoric. Galen coined him as the founder of Italian medecine. Lucretius admired his hexametric poetry.2 "He has been regarded variously as a materialist physicist‚ a shamanic
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