standards and an unknown sample were calculated; the unknown’s molecular weight and pKa’s were also determined. These results reported are used to identify the unknown compound. In this experiment‚ chromatography and titration were performed to identify the unknown amino acid. Within experimental error‚ the results were consistent with the reference literature cited in this report. Experimental Thin Layer Chromatography The amino acid standards used in this experiment were Alanine‚ Glycine‚ Serine‚ and
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What are the 6 sensitive periods? Write 7 to 8 lines on each of them? The Sensitive Periods in a child’s life was Dr. Maria Montessori’s greatest discovery. Though it was first discovered by a Dutch Scientist‚ Hugo de Vries‚ it was on animals‚ but Dr. Maria Montessori found the existence of this period in children too. The term “Sensitive Period” is used for a specific period of a child’s mental growth‚ during which the different sensibilities enable him to choose from a complex environment what
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1. (Ch. 20) What were the new establishments that were built in Umuofia? In the perspective of the Ibo people‚ were these positive or negative additions‚ or both? Explain. In Umuofia‚ they made a church‚ a school‚ and a government. In the perspective of the Ibo people‚ these establishments were all negative. These establishments were seen as negative because they destroyed the culture that has been established for hundreds of years. 2. (Ch. 20) What is the role of the District Commissioner? Who are
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Phillips 10/10/2012 ENG 112-Cox Essay Prompt 2 What Were The Things They Carried An author commonly uses literary devices in their text to both interest the audience‚ and to create a bigger depth to their work. In “The Things They Carried”‚ there are a few different elements Tim O’Brien uses to captivate his audience. Imagery‚ symbolism‚ and theme were a few of the devices he chose to use in this work. Throughout the story‚ he explains what the men carried‚ and by doing so‚ created a depth to
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Fossil fuels have been the main component used to get the source of energy for decades around the world where relying on the use of it has became a way of life. Kristinstand in Sweden‚ Europe‚ has substituted fossil fuels over a decade ago with biogas‚ which greatly decrease harmful carbon dioxide emissions‚ meaning it would not contribute to global warming. Harnessing renewable energy effectively can be done if the resources are present and there is support from the government. this essay will consist
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The separation is based on differential partitioning between the mobile and stationary phases. Subtle differences in a compound’s partition coefficient result in differential retention on the stationary phase and thus affect the separation. Thin layer chromatography (TLC) is a chromatographic technique that we use to separate the components of a mixture using a thin stationary phase such as silica plate supported by an inert backing. It applies mainly in medical‚ biological‚ chemical and pharmaceutical
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Fossils and Penguins Actions for ’Fossils and Penguins’ I have always loved fossils‚ and the discovery of what the fossils bring to us today‚ so I thought I would find out some information about fossils. I found an article about fossils and penguins. I love penguins and find them unique and interesting. Australia has a fossil record of penguins as far back as the Eocene period‚ which is the second Epoch period of the Tertiary period‚ between Paleocene and Oligocene Epochs which is 33.9 to 56 million
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There were thirteen original colonies in the North American region. The first English colonies settled off the coast of the Atlantic and started expanding west. The colonies have been placed into three regions the New England colonies‚ Middle colonies‚ and the Southern colonies. New England colonies consisted of (New Hampshire‚ Rode Island‚ Connecticut‚ and Massachusetts). The Middle colonies consisted of (New York‚ Pennsylvania‚ New Jersey‚ and Delaware). The Southern colonies consisted of (The
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their environment. The Industrial Revolution dramatically changed every aspect of human life and lifestyles. In this era‚ machinery replaced manual labor and fossil fuels replaced wind‚ water‚ and wood. The exploitation of natural resources such as coal and iron ore was also necessary to fuel steam engines for trains and boats in America during the 1800’s. By the early 1900’s‚ a huge increase in global factories and commercial sectors saw rapid growth economically. The start of car production was a
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Data Link Layer INTRODUCTION: Now a day’s communication is vital for the entire world‚ nothing happens without communication. The cell radio communication and wireless computer networks of GSM (Global System Mobile)‚ CDMA (Code Division Multiple Access) type are worldwide communication systems. All these communication systems are based on the reference model OSI-RM (Open System Interconnection-Reference Model) Description of OSI-RM System: OSI-RM is an International Standard ISO that defines
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