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Analysis of Food Colorings by Paper Chromatography Introduction Paper Chromatography one method for testing the purity of compounds and identifying substances. This is a useful technique because it is relatively quick and requires small quantities of material. Separations in paper chromatography involve the same principles as those in thin layer chromatography. The substances are distributed between a stationary phase and a mobile phase. The stationary phase is usually
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hydrogen atoms of the hydroxyl group are attracted to many of the oxygen atoms of the cellulose. The bonding of hydrogen within the fibrils causes the molecules to draw closer together which increases the strength of the fiber. Cotton ’s comfort and absorbency is also due to hydrogen bonding. A picture of cotton ’s chemical structure is shown below. Cotton is a natural fiber and is grown in temperate climates. Cotton plants live for at least two years in good conditions which makes it a perennial crop
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· tear newspaper into strips· HINT: always make the last layer of mache with white computer paper or paper towel so that painting is easier. It takes FAR less paint. If you don’t do this‚ consider priming the project with white acrylic paint before you let the kids at it with the poster paint· Make paper mache paste (there are many different options): · OPTION 1: 3/4 white glue to 1/4 water (or if using a good‚ thick glue‚ like elmers you can do 1/2 and 1/2) · OPTION 2: COOK METHOD: 1 part
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Table of Contents Executive Summary It is important for employers and employees to understand their roles and responsibilities in the housekeeping department in a hotel. This research paper provides a detailed analysis of four of many important factors in the housekeeping department. It discusses the responsibilities of an executive housekeeper‚ the cleaning procedures of a guestroom‚ the functions of the washer and dryer and contribution to the housekeeping department‚ and an overall
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start to write your abstract... Erase all paper instructions. The abstract should be between 120 and 250 words‚ one block paragraph & describes what you are discussing in the paper. Rewording the assignment questions is a good way to tell what will be discussed. It is not the introduction that is included in the body of the paper. UNIT 3 IP Introduction This is where you start the body of your paper by introducing what will be discussed in the paper – erase instructions Product of Choice
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------------------------------------------------- Paper Paper is a thin material produced by pressing together moist fibers‚ typically cellulose pulp derived from wood‚ rags or grasses‚ and drying them into flexible sheets. Paper is a versatile material with many uses. Whilst the most common is for writing and printing upon‚ it is also widely used as a packaging material‚ in many cleaning products‚ in a number of industrial and construction processes‚ and even as a food ingredient – particularly in Asian cultures. Paper‚ and the
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Dedication This Self Analysis is dedicated to all the people who guide‚ helped and prayed for me as I accomplish this paper. Acknowledgement Writing and doing this is never a solitary effort‚ and as always‚ there are many people I have to thank for having the energy and the ability to complete this self analysis. There are many ways to honor these people for their efforts‚ of course‚ so I thought I’d throw in a few different ways to say thank you-at
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How to Write an Academic Paper Using Method Instead of Madness Jim Janossy 10/31/2005 Writing papers is‚ for many students‚ a difficult‚ trying‚ and intimidating task. This is truly unfortunate because typically at least half of the courses students take in college use paper-writing as a form of academic exercise. Expressing yourself well in writing is often a crucial skill in the professional world. Yet whereas being articulate and knowledgeable in written composition in the workplace is a prized
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The Writing Process The writing process is a systematic process to develop a clear and effective paper. Many college students like myself‚ use it and you will learn in this English 101 class exactly how to use the steps of the writing process. The three main steps of the writing process which are‚ prewriting‚ drafting‚ and revision will lead you to write a very successful paper and help you better your writing. The writing process is a unique set of tools that many people use all throughout their
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