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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bEAN BAG ISOTOPES:ABUNDANCE AND ATOMIC MASS LAB By: Catriona Whalley Partner: Ming Siegel Due: 1.14.10 Prelab A new atomic theory‚ in which all atoms of the same element are identical to one another and equal in mass‚ was proposed by the scientist Dalton. Although the theory had its flaws and was simple‚ it was revolutionary. Scientists became able to study the actual structure and mass of atoms after the discovery of radioactivity. Soon‚ isotopes were discovered‚ as atoms of the same element
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1. Executive Summary In this article you will get to know about 3 top competitive luxury brands‚ Louis Vuitton‚ Chanel and Gucci. Louis Vuitton positioned itself in the luxurious goods industry‚ and has successfully embedded consumer’s mind with a sense of prestige and elegance in their branding. Gucci claimed a unique positioning in innovation and craftsmanship‚ trendsetting and sophistication. Chanel brand positioning has been perceived as elegant‚ exclusivity‚ and timeless as known
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Day One. The psychologist said I have to. Apparently just keeping memories in my head is not even safe anymore. I don’t‚ can’t remember. Anything. All my accomplishments‚ all my milestones‚ even last night’s dinner fade out from my mind eventually. And what can I do about it? Nothing. That is the answer. So in order to keep what little thoughts I have left‚ I need to lock them away‚ safe and sound in a journal. Maya snapped into focus at the sound of creaking floorboards. ‘Hello?’ A worried
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I don’t remember how I got here. There was a promise of money and shelter‚ a van and a brown paper bag. The van they transported me in smelled sour‚ the children they took before me must have pissed themselves. I think I was scared enough to. I lie here in a bed with an IV in my arm. I know I’ve been drugged into compliance but it’s hard to shake the fog. I hear other children in the area beyond curtained off section of the room my bed is in. The curtains were once white with speckled with blue
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AGRA FORT Also renowned as the Red Fort of Agra‚ Agra Fort is located near to the Taj Mahal gardens on the banks of River Yamuna. The real specimen of architectural marvel‚ this fortress was constructed in the 15th century. The construction of this mammoth structure started during 1565 during the Great King Akbar and continued the developments up to the period of King Shah Jahan‚ the grandson of Akbar. The fort‚ in a length of 2.5 km marvelous enclosure walls‚ is built in red sandstones and encloses
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Problem Statement: There was a very economic king who gathered up all the gold in his land and put it into eight bags.He made sure that each bag weighed exactly the same amount. The king then chosed the eught people in his country whome he trusted the most‚and gave a bad og gold to eahc of them to keep safe for him.On special occasions he asked them to bring the bags back so he could look at them.(He liked looking at his‚even though he didnt like spending it.) One day the king heard from a foreign trader
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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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Free Speech: Finding the Balance The concept of free speech has been an enduring and drama-filled issue in the United States. While Americans enjoy a much higher level of freedom than residents of oppressive and dictatorial countries in the world‚ the Constitution remains in some areas ambiguous and open to interpretation and manipulation. It has been – and will continue to be – difficult to find the balance between allowing generous expressive freedom and protecting citizens from the harmful
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Another aspect of becoming a speech pathologist would be to consider the nature of work. The nature of work includes daily duties and responsibilities. For instance‚ one major duty a speech pathologist has to do is being able to diagnose disorders and educate students‚ staff and parents. This duty can help the individual(s) become more aware of the situation. Some patients may have had a stroke or has autism and the speech pathologist has to educate their family or them about how they are going to
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