• Isolation of Caffeine from Coffee
    -------------------------------------------------   Isolation of Caffeine from Coffee Date of laboratory work: 10/9/2012 5:00-7:45 Date of report written: 10/15/2012 Introduction: The purpose is to isolate caffeine from coffee by using the organic solvent dichloromethane
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  • Organic Chem 1 Post Lab Report
    Post Lab Report Experiment 3 - Chromatography – Analyzing Analgesics by TLC and Isolation of β–Carotene by Column Chromatography Chemicals 1. Acetaminophen (C8H9NO2) 2. Aspirin (C9H8O4) 3. Caffeine (C8H10N4O2) 4. Ibuprofen (C13hH18O2) Introduction In this experimen
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  • Extraction of Caffeine from Tea Bags
    Extraction of caffeine from tea bags ABSTRACT Caffeine extraction from the commercial tea leaves (Lipton Yellow Label Tea) that was done is multiple extraction. 4 tea bags   were used in the experiment; tea leaves were weighed having 8.5333 grams. The leaves were boiled in a beaker with 150ml o
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  • Chemistry lab report
     Department of Chemistry Extraction and Sublimation Experiment #4 10/02/13 Introduction Caffeine is a stimulant found in tea, coffee, cocoa, OTC medication, and cola drinks.It stimulates the brain and the central nervous system, so that a person feels less tired and...
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  • Lab Report on Solubility
    Separation of the Components of a Mixture General Chemistry 1 (Chem 101), ISP SCUHS Report 2 January 26, 2014 Abstract The analyses of mixture were to distinguish and identify homogeneous mixture by using the techniques of decantation and sublimation. By performing these...
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  • Lab Report
    Radish Seed Lab Report Problem: What caffeinated drink (monster, coffee, or green tea) will the radish seeds grow in the best form over a nine day period? Hypothesis: If the radish seeds put in the dish with the drink Monster, then the seeds will grow faster because of the amount of energy given t
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  • Caffeine extraction
    Objective:     To extract caffeine from tea powder using polar - nonpolar solvent extraction technique. Theory:   The technique used to separate an organic compound from a mixture of compounds is called Extraction. Extraction process selectively dissolves one or more of the mixture...
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  • Caffeine and Its Benefits
    Lab #6: Extraction of Caffeine from Tea Pre-Lab Question Article: “Coffee Break: Does Caffeine Perk Up Memory?” By Lisa Stein A recent study from France in 2007 found that women, age 65 and over, who drink 3+ cups of coffee a day, did appreciably better on memory tests than women who dran
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  • The Effects of Using Caffeine
    The Effects of Using Caffeine Caffeine is the most-widely consumed psychoactive substance by human beings throughout the world (Reid, 2005). This report will detail its natural origins, chemical structure (as well as those of similar substances), and the methods and dosages in which it
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  • History of Coffee
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  • Caffeine Isolation
    | Experiment U: Isolation of Caffeine from Tea | | | Darius Xavier Johnson | 2/29/2012 | | Purpose: The purpose of this experiment was to gain a better understanding of extraction chemistry and how these techniques can be applied to everyday products and other necessary product
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  • Caffeine
    1-1 EXPERIMENT 1 ISOLATION OF CAFFEINE FROM TEA In this experiment you will isolate caffeine from tea leaves and prepare the salicylate derivative. Introduction This experiment illustrates the isolation of a naturally occurring product from plant material -- caffeine from tea leaves. The expe
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  • Isolation of Caffeine from Tea
    Name: Date of Experiment: November 20, 2012 Group mates: Date of Submission: November 28, 2012 Experiment No. 1 ISOLATION OF CAFFEINE FROM TEA I. Introduction Caffeine is a very common substance and is found in coffee, tea, soft drinks, chocolate, and "stay-awake" pills such
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  • Decaffeination of Coffee
    Abstract Coffee is the third most popular beverage in the world after tea and water. However, the caffeine within coffee prevents some people from enjoying the strength, taste, and aroma that this beverage has to offer. In the past century, a new market for decaffeinated coffee has arisen, and th
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  • Isolation of Caffeine from Tea Leaves
    Extraction of Caffeine from Lipton® Tea Leaves Nathaniel Camangon*, Kaila Bumagat, Franz Mari Burgos, Remigio Callanta Department of Chemistry, College of Science, University of Santo Tomas, Manila, Philippines Abstract This experiment mainly focuses on the extraction of pure caffeine by m
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  • CHM 235LL acetlyic acid lab
    johnny DOe CHM 235LL – Monday, 9/16/13 Extraction of Caffeine from Tea with Methylene Chloride Abstract Caffeine is natural chemical stimulant isolated from tea leaves. In experiment 13 we extract caffeine along with other organic chemicals such as tannins, cellulose, and chlorophyll....
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  • caffiene extraction discussion
    Discussion: Impure caffeine was extracted from the instant coffee by separation and evaporation. The amount of impure caffeine in 4.0045g of instant coffee was found to be 64.5mg with a yield of 1.6%. The yield is higher than the overall class average yield. This shows that there is a...
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  • Bio Lab Manuel
    Exercise 1: Correct Use of the Scientific Method and an Experiment with Macromolecules I. Objectives In this lab, students will: a.) Learn how to utilize the Scientific Method to develop a testable hypothesis b.) Generate an effective experimental design from a hypothesis c.)...
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  • technical report writing
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  • Bio Lab manual
     Biology 160 Lab Manual Tacoma Community College Last update 06/03/2013 This page left intentionally blank Table of Contents Table of Contents i Laboratory 1: Principles of the Scientific Method 4 In-Lab Report Sheet 12 This page...
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