Post Lab #4- Column Chromatography Organic Chem 3418-2 March 3‚ 2011 Theoretical Background- The fluorene and fluorenone mixture was separated by first dissolving the mixture in heptane. Since “like dissolves like”‚ fluorene dissolves with the non-polar heptane and the polar fluorenone dissolves in the polar ethyl acetate solvent. This phenomenon was illustrated in class before the experiment‚ when it was pointed out why water will not dissolve fluorene‚ fluorenone‚ or transstilbene
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CIVIL ENGINEERING ABSTRACT This report describes a compression test on concrete columns. The main aim of the tests was to illustrate the ultimate strength limit state of reinforced concrete columns in combined bending and compression and to demonstrate the influence of slenderness on the ultimate load capacity. Test methods are described. It was found that the concrete columns exhibited complicated behaviour‚ and had a squash load point of 342.7KN and moment at 0 KN.m‚ a decompression
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I agree that the law should continue making and putting up speed limit signs. If they never put up speed limit signs our country would be crashed. There are very good reasons for them and most people disagree with these laws. Some people would be seriously injured if they did not exist. For example say you live on a really curvy road and you had to work late one night. The speed limit on you’re road was thirty-five miles per hour but‚ you were in a hurry to get home and your lights
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COLUMN AND THIN LAYER CHROMATOGRAPHY Group 9 RAMOS‚ Sharina Joy; REYES Aina Marie; REYES Jallisa Maan; RUBIO‚ John Michael; SABINO Patricia Anne; SANTOS‚ Carlos Rafael ABSTRACT To separate the colored components of siling labuyo and to determine the purity of the components‚ the students performed a column and thin or solid-liquid chromatography procedure. The solid may be almost any material that does not dissolve in liquid phase. But for this experiment‚ the solid used by the students was
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Importance of Eating a Balanced Diet And Maintaining a Sound Body Having a sound body is essential. One of the traits or characteristics of a balanced man is having a sound body and through the process you learn how to balance both sound mind and sound body. In order to achieve this one of the things I incorporate into my daily life is exercise. Whether it be a walk/jog‚ playing basketball or some type of sport‚ or even going to the gym to work out for a bit‚ I try to incorporate some type
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ripples‚ but the waves transfers energy from one point to another. there are two major classes of waves ; mechanical and electromagnetic waves . Mechanical waves are waves that require a material medium for their propagation‚ such as water waves and sound waves. Electromagnetic waves are waves that do not require a material medium for their propagation. Examples are light rays‚ radio waves‚ x-rays and gamma rays. wave motion The particle of the medium which transfer energy move to and fro‚ or vibrate
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Sample Problems for Speed: 1. Calculate the speed of a dog running through a field if he is covering 23.7 meters in 54 seconds. 2. If a cross country runner covers a distance of 347 meters in 134 seconds‚ what is her speed? 3. What is the speed of a baseball that travels 49 meters in 2.4 seconds? 4. What is the speed of the horse that runs a distance of 250 meters in 3.5 seconds? 5. The girl runs 136 meters in 30 seconds. What is her total speed? Sample
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Column-Level Security with Information Design Tool: Using Business Security Profiles to Secure Objects and Customize the Reporting Experience One of the new universe security features in Information Design Tool (IDT) is the Business Security Profile‚ which allows universe designers to assign column-level security on objects and apply profiles directly to users and groups. Business Security Profiles provide advanced and flexible object security‚ which is an overall improvement compared to the all-or-nothing
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The coming of sound was an innovation to cinema that forever changed the way films were produced‚ viewed and performed. Sound plays many roles in the way a film is narrated and perceived by the audience. Sound‚ as defined in the Oxford Dictionary of Film Studies‚ ‘is central to the way in which a film establishes setting‚ shapes character‚ signposts its narrative‚ directs the audience’s and instils general emotional states’ (2012: 385). Sunrise: a song of two humans by F.W. Munrau was released in
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down a crowded New York Street you will see a remarkable diversity of your peers‚ but chances are you will pass each other before you can inquire about their relationship status. Is Speed Dating For Me? Are you someone who makes a favorable first impression? It is important to answer this question honestly‚ since speed dating meetings are 3-6 minutes. If first impressions do not come naturally‚ you can research body language. A study of the subtle effects of body positions can empower an individual
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