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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keeping these employees motivated may prove to be quite difficult. 2001‚ many intelligence agencies have experienced a surge in hiring however; many of these employees have five (5) years experience or less. Furthermore‚ a recent intelligence agency report stated findings that employees coming to retirement age in the next five (5) years are expected to increase
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University Press‚ 2003‚ pp196-204 Barth‚ J.R Becsi‚ Zsolt. And Wang‚ Ping. “Financial Development and Growth”‚ Federal Reserve‚ Bank of Atlanta‚ Economic Review‚ Fourth Quarter‚ 1997‚ pp46-59 Berkowitz‚ D.W “Financial Market Deregulation”‚ Economic Report of the President‚ prepared by the Council of Economic Advisers”‚ American Banker‚ Volume 149‚ P5(9)‚ 1984‚ March 13‚ pp6 Fitzgerald‚ E.V.K Griffith-Jones‚ S and Drabek‚ Z‚ Financial Reform in Central and Eastern Europe‚ New York‚ St Martin’s Press
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A Day In The Life Of A School Bag It was a typical (ordinary) school day and I was being packed with my heavy load. I had different compartments. Inside in you could find books‚ pencils‚ erasers‚ rulers‚ dictionary‚ Atlas of Belize‚ some coins and other stuff (things). My zips were closed and I was lifted off the ground. It was time to go to school. I was being tossed (flipped‚ swung) around. I kept bumping into something hard. Soon I felt myself being lifted up again. ‘We were at school.’ I thought
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Air Bags (Lesson Plan) (Exploring the Science of Automotive Air Bags) Suggested Grade Level 8-9 Standard Statements (Pennsylvania) 3.1.10A Discriminate among the concepts of systems‚ subsystems‚ feedback‚ and control in solving technological problems. 3.1.10E Describe patterns of change in nature‚ physical and man made systems. 3.2.10B Apply the elements of scientific inquiry to solve problems. 3.2.10C Identify and apply the technological design process to solve problems
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Diapers Bags for Dads So‚ men need to carry diaper bags for dads too. They love to take care of baby as much as moms do and so the right diaper bags for dads can make it easier and more fun and keep men as involved in baby care as they want to be. A cute but girly bag is sure to make most men shy away from carrying a diaper bag thus denying them the pleasure of taking care of baby.Diaper bags for dads should make it easy for dads to carry baby’s diapers‚ bottles‚ wipes‚ toys‚ pacifiers‚ change of
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Medicine Bag” have both similarities and differences. One story is based on a girl and her adventure to get the medicine bag and the other is based on a boy who goes through a journey with his native grandfather to get the medicine bag. They both receive a medicine bag that protects the main characters‚ Martin from “The Medicine Bag” and Dachina from “Rite of Ritual” in their long journey of life. “The Medicine Bag” and “Rite of Ritual” are similar because they both received a medicine bag. Also‚
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time we use a new plastic bag they go and get more petroleum from the Middle East and bring it over in tankers‚". "We are extracting and destroying the Earth to use a plastic bag for 10 minutes.". They harm wildlife and marine life-plastic bags are now in all places in our environment‚ and animals‚ on land and water‚ are getting choked‚ strangled and killed by them. They create litter-Aside from polluting beaches and waterways‚ plastic bags for example in China plastic bags are blowing around streets
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Scott Williams Shofner‚ 2nd Comp. 1 September 22‚ 2014 Making Ice Cream in a Bag Have you ever made homemade ice cream? It can be a lot of fun‚ and you end up with a tasty frozen treat! Craving for ice cream is a frequent passion that everyone has. Once one faces this passion‚ one usually makes a run down to the local grocery store for a pint of ice cream. But that’s not necessary‚ don’t go running down to the store or market for an ice cream fix. If the house consists of these core ingredients:
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