bars‚ pubs or somewhere else we can see that people drink many kinds of alcohol such as wine‚ spirits and beer. Alcohol includes many components‚ some of which can be dangerous for people drinking alcohol. Everyday‚ millions people drink alcohol and more than billions of liters of alcohol is consumed all over the world. Alcohol may affect not only on our bodies but also on our lives. For many reasons‚ alcohol is considered a kind of drink having a lot of disadvantages. Because of its bad components
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S. I. R. (Science Investigation Research) 1 YR – ST. LOUIS OF BERTRAND SUMITTED TO: Leah Ilagan (Integrated Science Teacher) SUBMMITED BY: Agustin‚ Nathan Raphael DL. Arcaira‚ John Carlo B. Catuira‚ Jerrico B. Olalia‚ Nicolas Andrei Serna‚ Christian O. Zipagang‚ Lance Harvey O. PROBLEM: How Caffeine affects a Gold-fish Chapter 1: The Problem and Its Background * Background of the Study * Caffeine is becoming a common chemical found in the environment
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extraction method to extract the caffeine from the tea bags that were provided‚ and then recrystallize the caffeine. The solvents used in the experiment were an aqueous sodium carbonate and dichloromethane (DCM). Anhydrous calcium chloride pellets were used to dry the solution and emulsion layer and the DCM was then decanted. After washing the anhydrous calcium chloride pellets with more DCM‚ the solvent was evaporated‚ leaving greenish-white crystalline caffeine residue weighing about .25 mg.
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MULTIPLE EXTRACTION OF CAFFEINE FROM DRIED TEA LEAVES USING DICHLOROMETHANE Delos Reyes‚ K.‚ Dizon‚ G.J.‚ Enriquez‚ J.R.‚ Estrada‚ G. and Garcia C. Group 4 2G Med Tech Organic Chemistry Laboratory ABSTRACT Caffeine was extracted from dried tea leaves by multiple extraction technique. 10g of tea leaves was boiled in a solution of 4.4 g anhydrous sodium carbonate and 100ml distilled water and was extracted three times using 20 ml of dichloromethane. Theresidue was collected by decanting
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EFFECT OF CAFFEINE ON HEART RATE LECTURER : MDM ZAKIAH BINTI ZAKARIA TITLE The effect of caffeine on heart rate OBJECTIVE To determine the effect of caffeine on heart rate of daphnia INTRODUCTION Caffeine‚ medically known as trimethylzanthine. Its chemical formula is C8H10N4O2. When in pure form‚ caffeine is a white crystalline powder that taste very bitter. 1The most common way of acquiring pure caffeine is the process of decaffeinating coffee and tea. Caffeine is found
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2013 Informative Speech-Caffeine Outline Specific Purpose: To inform my audience about what caffeine is‚ the effects of it‚ and the withdrawal symptoms. Central Idea: Caffeine can be found in many places and comes in many forms. It can major effects on our body and we can experience major withdrawal symptoms. Introduction I. What does coffee‚ tea‚ soft drinks‚ chocolate‚ and a bottle of medications have in common? II. They all contain caffeine‚ and that’s what I’m going
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types of drinks made for human consumption to quench thirst. Sugary drinks or soft drink is one type of beverage‚ which is added with sugar such as Coca Cola which is a common soft drink. Energy drinks are also known as sugary drinks. Sugary drinks have many reasons for and against regulating it. Although sugary drinks are in favor of many people‚ it is also important to note that it is in opposition to others in a nation at large which gives use to the question of whether sugary drinks should be
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Contracts – MacDougall 2010-2011 Sara Li FORMATION Offer & Acceptance Offer & Invitation to Treat Mere puffs Invitation to Treat Offer Mere puff: no reasonable person would take it as an offer Can the terms of the K (ie offer) only come from one party? * Battle of the forms - last shot/first blow? (Denning in Butler Machine Tool v Ex-Cell-O Corp) * Strict offer & acceptance is reaffirmed in Gibson v Manchester City Council [1979] - only extreme cases might not
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makers of sports drinks spend millions of dollars advertising the benefits of their products. One of these featured benefits is often electrolytes‚ which your body loses as you sweat. In this chemistry science fair project‚ you will compare the electrolytes present in a sports drink with those in orange juice to find out which drink has more to replace the ones you lose as you’re working out or playing sports. When you are finished‚ you might even want to make your own sports drink! Objective To
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Swedish counterparts‚ which of the following strategies would be advisable to Ikea? a. standardization. b. new product development. c. adaptation. d. withdraw from market. e. lower prices to encourage attitude change. Answer: (c) Difficulty: (1) Knowledge: (A) Page: 349 2. In the Australian market‚ rather than manufacturing disposable diapers‚ Proctor & Gamble decided to import them since the size of the market did not warrant local manufacturing
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