Experiment 2: IDENTIFICATION OF UNKNOWNS BY TLC AND MP IN COMBINATION Introduction: Thin layer chromatography (TLC) is one of the most valuable techniques in organic chemistry. This is a best method of separating and identifying mixtures of two or more compounds. The separation is accomplished by the distribution of the mixture between two phases: one that is stationary and one that is moving or mobile. Chromatography works on the principle that different compounds will have different
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success. Advantages The advantages of direct seeding over tubestock planting are many: * Direct seeding is much cheaper (10 - 20% or less of the cost of planting tubestock)‚ and requires minimal labour. * Existing farm equipment can be used. Alternatively‚ several organisations and landcare groups have direct seeding machines for hire. * Higher plant density after germination provides better shelter to new seedlings and reduces weed competition. It also allows natural selection to
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EXPERIMENT 1: REACTIONS OF ENOLATE IONS WITH CARBONYL GROUPS Aims In this experiment we used two techniques for the reactions of enolate ions with carbonyl groups. One technique used was Doebner reaction and the other technique used was Claisen-Schmidt reaction. Therefore the aim of this experiment is to synthesize trans p-methoxycinnamic acid and to synthesize dibenzalacetone via an aldol condensation reaction between acetone and benzaldehyde. The products would be recrystallized using ethanol
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involves the process of distillation. Distillation is the separation of volatile substances mixed with nonvolatile substances by boiling the mixture to alter the phase of the volatile substance. The researchers used the simple distillation set up to conduct the experiment. 25 ml of The Bar Vodka was used and 7 ml of distillate was collected before a temperature of 95 degrees Celsius was reached. Collected distillate was then subjected to a flammability test to confirm ethanol content. The percent ethanol
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People often refuse the idea of being from the animal kingdom to remove themselves from nature in order to justify their actions. Its believed that humans are not part of the animal kingdom because simply we have rational thinking and free will which animals don’t have. Moreover‚ we have conscious that animals don’t have‚ things that makes humans unique and characteristics that animals don’t have or have different‚ according to science‚ things like Upright Posture‚ nakedness‚ hands‚ Brain size‚ clothing
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Being a mother is the most important in the world because they help in children’s social and emotional development. A novel name We The Animal‚ written by Justin Torres‚ the narrator describes his mother as a confuse goose of woman. The narrator use this metaphor to show some of his mother’s weaknesses. He believes that she is a confused person who survives her life very hard. There are other moments in the book when the metaphor is used to describe mom’s character. Mothers have an important
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The Experiment Gloria Isham Central Texas College Twenty- six men are chosen to participate in the roles of guards and prisoners in a psychological study led by a Doctor Archaleta for which each participant is to receive $14‚000 after two weeks. Travis has just lost his part time job and is a peace protester who wants to travel to India with his girlfriend. Barris is a 42-year-old who lives alone with a domineering mother‚ who has made him join the experiment to raise money for her hip operation
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In the novel ‘Animal Farm’ a socialist idea is first expressed in Old Major’s speech to the animals of the farm. Socialism is a political system where wealth is shared equally between the people and placing the ownership and control of capital‚ land and production in the hands of the community as a whole. This was a utopian socialist dream that was eventually abolished by political tactics implemented by Napoleon‚ with the assistance of Squealer and the other pigs in order to make room for their
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Should animals be used for scientific research or testing? Agli Panci Instructor: Eva Prifti Course: Composition I Time: Thursday‚ 15:00-18:00 From the early time humans survival was depended on animals‚ either as food or for transporting. Today we are using animals for a new kind of survival‚ we are using them for testing and experimenting medicines that we need for different diseases. All along this time‚ this experiments has helped a lot for discovering of new kind of diseases and medicine
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EXPERIMENT 5 REDOX TITRATION: TITRATION USING SODIUM THIOSULPHATE Objectives 1. 2. To prepare a standard solution of potassium iodate for use to determine the concentration of sodium thiosulphate solution accurately. To acquire the proper techniques of carrying out a titration. Introduction Redox titrations using sodium thiosulphate as a reducing agent is known as iodometric titration since it is used specifically to titrate iodine. The reaction involved is: I2 + 2Na2S2O3 I2 + 2S2O322NaI + Na2S4O6
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