Experiment 11b: Isolation of Caffeine from a Tea Bag October 12‚2012 Purpose: The objective of this experiment is to extract caffeine from tea bags using the method of extraction. After the caffeine is extracted it is then compared to the nutritional facts amount per serving on the tea bags box. Supplies: Glassware: 1. 50.0 m L graduated cylinder 2. 150.0 mL beaker 3. 2-glass stirring rod 4. 6-test tubes 5. 2-glass pipettes 6. 2-50.0 mL Erlenmeyer flasks 7. glass funnel Hardware:
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However‚ Elizabeth‚ the protagonist of The Paper Bag Princess defies typical gender roles as a female character and becomes the hero of the story. Cinderella and The Paper Bag Princess share many qualities‚ but have major differences as well. Cinderella is an example of a woman who occupies traditional‚ domestic roles‚ but she does not portray the modern‚ liberated woman Elizabeth exhibits.
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plastic bags when shopping for groceries. It just doesn’t make any sense to me. There are so many obvious reasons reusable bags are better to use! Reusable bags are‚ of course‚ reusable‚ reliable‚ they save businesses money‚ and they are better for the environment. A reusable shopping bag‚ is a type of shopping bag which can be reused several times. It is often made from fabric or a thick plastic that is more durable than disposable plastic bags‚ allowing multiple use. Reusable shopping bags are a
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PAPER OR PLASTIC? THE ECONOMIC IMPLICATIONS OF PLASTIC CARRIER BAG LEGISLATION IN THE UNITED STATES. A THESIS Presented to The Faculty of the Department of Economics and Business The Colorado College In Partial Fulfillment of the Requirements for the Degree Bachelor of Arts By Leeland C. Smith May 2009 PAPER OR PLASTIC? THE ECONOMIC IMPLICAnONS OF PLASTIC CARRIER BAG LEGISLA nON IN THE UNITED STATES. Leeland C. Smith May‚ 2009 Economics Abstract This study aims to detennine the best possible
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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 of water; the aqueous tea extract was transferred in a seperatory funnel mixed with DCM (20ml)‚ done thrice. The DCM layer was washed with 20ml 6M NaOH in the seperatory funnel; the organic layer was dried
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Tatyana Thompson CST 105- 38 Professor Simon September 18‚ 2013 Any Old Bag Speech Reflection The “Any Old Bag Speech” was definitely an eye opener for me. This speech opened my eyes to things that I most definitely have to improve on‚ refine‚ and learn how to be a good speaker in front of an audience. What I learned from the video was I that I actually love the quality of what I have to say. It is very detailed and tells exactly what I want to say. Furthermore‚ I was very surprised to see how
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Sciences at the University of Pennsylvania RESEARCH PAPER NO. 13-2 Grocery Bag Bans and Foodborne Illness Jonathan Klick UNIVERSITY OF PENNSYLVANIA Joshua D. Wright GEORGE MASON UNIVERSITY This paper can be downloaded without charge from the Social Science Research Network Electronic Paper Collection: http://ssrn.com/abstract=2196481 Electronic copy available at: http://ssrn.com/abstract=2196481 Grocery Bag Bans and Foodborne Illness Jonathan Klick Joshua D. Wright November
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is a myriad number of details hidden in each bag. Both types of bags are designed to make carrying a variety of items easier. The type of bag that is chosen will affect consumers health and the environment. Consumers need to be informed on how these bags are created‚ what effects these bags will have on the environment‚ and what will happen to the bags after they have been used. Both types of bags utilize natural resources to be created. Plastic bags are made from petroleum‚ a non-renewable oil
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participate in yoga‚ they believe the percentage of their products sold for other activities will continue to increase as they broaden their product range to address other activities. Lululemon’s fitness related accessories include an array of items such as bags‚ socks‚ underwear‚ yoga mats‚ instructional DVD’s‚ and water bottles. They believe the authenticity of their products is driven by a number of factors. These factors include their athlete-inspired design process‚ their use of technical materials‚
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Sandra Lawson English 101 Jen Heckler 15March2013 To Use or Not to Use Plastic Grocery Bags an d Plastic Drinking Bottles. Most people if asked would say that they want to do the correct thing when it comes to their plastic waste. Every day the human race throws out millions of pounds of toxic waste in the form of plastic drink bottles and plastic grocery bags‚ for the most part‚ we do not do this maliciously; most people just do not know where to dispose of it other than the wastebaskets
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