RECRYSTALLIZATION OF ACETANILIDE De Ocampo‚ Yves Aaron Julian Q.‚ Dela Vega‚ Roderick B. Jr.‚ Elguira‚ Cedric Tristan D. Enriquez‚ Joanne B.‚ Gabat‚ John Elliot N. Group 5 2D-Medical Technology Faculty of Pharmacy‚ University of Santo Tomas ABSTRACT The experiment was executed in order to purify compounds through recrystallization. Recrystallization is the primary used operation for purifying solid organic compounds that differ in solubility at different temperature. It is a process of dissolving
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1) Using tweezers remove individual plants from the soil and remove the roots with scissors. Measure the weight of each individual and place in a 1.5 mL microfuge tube. Place this tube directly into liquid N2 to freeze plant tissue. 2) Remove tubes from the liquid N2 and quickly grind the plant tissue with a pestle. Add 300 L of Methanol 1%HCl and continue to grind the plant tissue. Allow extraction to occur overnight in a dark refrigerator. 3) Add 200 L Milli-Q H20 to each tube. Next
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Case Study 1: The Generics Pharmacy Brief Identification Year launched: Franchise operations started in 2007. Key contacts: The Generics Pharmacy‚ 459 Quezon Ave.‚ Banaue‚ Quezon City. Tel. 632-732-3333; 632-712-7777 Brief background or history: The mother company (Pacific Insular Co.) that gave birth to The Generics Pharmacy (TGP) franchise started in 1949 as a family enterprise involved in pharmacy importation and distribution. In 1974‚ the current TGP President‚ Mr. Benjamin Liuson
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reaction is the unrivaled‚ Caffeine. I picked caffeine on the grounds that I‚ for one‚ am dependent on this substance and i use it in my ordinary life through coffee and other such foods. Caffeine (C8H10N4O2) is the regular name for trimethylxanthine (precise name is 1‚ 3‚ 7-trimethylxanthine or 3‚ 7-dihydro-1‚ 3‚ 7-trimethyl-1H-purine-2‚ 6-Dione). It has a molar mass of 194.19 grams. Caffeine fits in with the heterocyclic compound otherwise called purines‚ caffeine can likewise be delegated an
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certain temperatures such as‚ 0°C‚ 22°C‚ and 95°C effect the concentration of the water and potato enzyme solution. In this graph‚ concentration is on the y-axis and time on the x-axis. In the legend‚ it displays which line represents which temperature. From the data shown in graph‚ it can be concluded that a lower a temperature such as‚ 0°C‚ will have a higher concentration and a higher temperature such as‚ 95°C‚ will have a lower concentration. Conclusions: The data recorded in the graph is related
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to introduce my self first. My name is David Cho * Caffeine is used to provide a "boost of energy" or a feeling of being more alert. It’s often used to stay awake longer and many people feel as though they "cannot function" in the morning without a cup of coffee to provide caffeine and the boost it gives them. 9 in 10 Americans consume some form of caffeine regularly‚ making it the most popular behavior-altering drug. * Caffeine is a naturally occurring substance. It is part of a group
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experiment‚ there was a total of 2.25g of caffeine (the net weight of the tea bag). After preparing the tea solution‚ extracting‚ drying and evaporating the weight of crude caffeine was .0321g‚ making the percent recovery before sublimation 1.43%. After sublimation the weight of pure caffeine was .0027g‚ making the percent recovery of caffeine after sublimation .12%. The percent recovery of caffeine is less in the second half of the experiment because the crude caffeine had some impurities in it which were
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Assistant in a kindergarten. Besides that I have a brother who has successfully managed to become a bank officer in Kuala Lumpur‚ and an elder sister who is still studying at Universiti Teknologi Malaysia taking degree in Industrial Mathematics .Apart from that‚ I also have a 15 years old younger sister and she is studying at SMK Tasek Utara‚ Johor Bahru . To make my life more interesting‚ I possess some hobbies. During my free time‚ I love to read novels and surf the Internet to find out the latest
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Caffeine is a drug commonly used as a central nervous system stimulant. It is found in plants like coffee and tea. Caffeine can also be found in soft drinks‚ and it is regarded as the most widely consumed stimulant drug in the world based on Nehlig‚ Daval‚ & Debry (1992) research. The interaction of caffeine with adenosine receptors in the brains makes an individual more alert. A moderate intake of caffeine results in small healthy risks while high doses could be a catalyst to negative effects like
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environment‚ personality and opportunity also will determine the career choices students make. Points: 150 ENGL227 Formal Report (Part One) Rubric Percent: 0% Your Points Max Points Table of Contents and Introductory Section of the Formal Report (150 pts) 0 30 Format: The writer has formatted the Table of Contents and Introductory Section of the Formal Report using Formal Report formatting‚ including first- and second- level headings‚ like the example on pages 437-439 in Chapter 15. Those heading
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