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 more alert. The purpose of this lab is to determine the amount of caffeine in tea. The major component of tea is cellulose which is a polymer of glucose. Materials Lab coat Goggles Graduated cylinder 1 tea
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INTRODUCTION Attention getter: Ever since Red Bull came on to the market in 1997‚ there ’s been an explosion in caffeinated energy drinks. Some are marketed as food and others as dietary supplements. But there ’s little guidance for the consumer on how much caffeine is in them. Specific purpose: The specific purpose of my speech is to persuade you to take a stand against energy drinks due to the negative effect it may cause on your body. Listener relevance link: Each of us should care about this because
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and/or an iced coffee. This much caffeine would maintain me awake during the day but provoked a difficulty concealing a good sleep. By the next day‚ Monday‚ I would have to drink large quantities of caffeine in order to maintain myself awake and alert during the day. By the time that it was time to sleep I would sleep late again‚ and consequently I would start the new cycle of not sleeping well because of too much caffeine‚ and having to drink more caffeine on the next day. Identifying my behavior
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drugs marketed as providing mental and physical stimulation through high amounts of sugar and caffeine. Other common chemicals are taurine‚ inositol‚ Vitamins B3‚ B5‚ B6 and B12‚ supposed to provide extra energy. This paper will identify structures‚ why these compounds give energy‚ health implications and propose an energy drink ban for teenagers. Caffeine (C8H10N4O2) is below left. Caffeine is fat and water-soluble‚ being absorbed into blood flowing to the brain. Adenosine is a brain
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less sleep. To keep them going‚ some drink a cup of coffee to avoid drowsiness. Coffee contains caffeine which serves as a stimulant. It keeps one stay awake but it disrupts sleep. That is why to avoid sleeping difficulties; it is recommended that coffee should not be taken within four to six hours before bedtime. Gasapo 2 Coffee is a beverage which contains caffeine-a widely used stimulant. Caffeine can indeed bring mental alertness but disturbs sleep. In a recent interview of selected UP Computer
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Traffic Problems in Baton Rouge 5:30 traffic in Baton Rouge could easily be defined as the time in which no one wants to get in their car and go anywhere regardless of urgency. Baton Rouge‚ Louisiana is notoriously known for their inefficient traffic systems. Why is that? With a population rank of 67th in the United States‚ Baton Rouge’s ranking of 33rd in the nation for worst traffic congestion has definitely impacted the community’s identity (Meaux‚ Reveille). Money‚ or lack thereof‚ plays a
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vitality required for sustained physical or mental activity. 2. What is the physiological role of each of the molecules in your table? The role of each of the molecules in my table is to 1. Which ingredients provide energy? How do they do that? Caffeine‚ sugars and many more provide energy by stimulating the central nervous system giving the body a sense of alertness. It can raise heart rate and blood pressure while dehydrating the body. 2. Which ingredients contribute to body repair‚ I.e.‚ which
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Ingredients: Other than the caffeine and carbohydrates energy drinks contain: B vitamins: Energy drinks contain B vitamins that exceed the daily-recommended amounts. Gingko: German pharmacological studies suggest that this herb increases blood flow to the brain and may be effective in treating depression and short-term memory loss. Guarana: An herbal stimulant popular in Brazil. The reason guarana is so stimulating is that it contains two to three times the caffeine of coffee. Carnitine:
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Bibliography: Around the country: "the birth of coffee" pours out origins of global coffee culture. (2012‚ September-October). Natural History‚ 120(8). Caffeine plus carbohydrate boosts sports performance. (2012‚ April). Environmental Nutrition‚ 35(4)‚ 8. Coffee study: Morning brew is Americans ’ largest source of antioxidants. (2005‚ October 25). Science Letter‚ 86. Dolliver‚ M. (2010‚ October 18). Thirty-two
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stimulants‚ including the two drugs in this class ( methylphenidate [Ritalin] and amphetamine) are used to treat extreme daytime sleepiness also known as narcolepsy and for their calming effect in attention-deficit hyperactivity disorder (ADHD). • Caffeine‚ a stimulant found in foods and drinks‚ is used to promote wakefulness and alertness. The orally active stimulants were formerly used as an aid to dieting but were of little value for this purpose. They may still be used in the most extreme cases
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