about this experiment: According to GCP#3 i.e. Less hazardous chemical synthesis: extraction of crude caffeine pose little toxicity to human health and the environment.(1) Q2) Things not green: According to GCP# 5 i.e. Safer solvent and auxiliaries: In liquid-liquid extraction of caffeine‚ Dicholoromethane was used which is a hazardous chemical and have potential acute health effects(2). According to GCP#12 i.e. Inherent safer chemistry for accident prevention: The separatory funnels used
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According to the results‚ the experimental group had a huge impact when the diluted concentration of caffeine was put in compared to the control group that contained no concentration of caffeine. The hypothesis was supported because a significant decrease of the total number of cells when caffeine solution was added to the experimental group was clearly shown. An addition of small amounts of caffeine does inhibit cell proliferation and affect cell viability during the lab experimentation one more test
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Isolation of Caffeine from Tea (12A) Introduction When a person drinks tea or coffee‚ it is not pure caffeine. It also has other natural substances. The purpose of this lab was to isolate caffeine from tea leaves. The methylene chloride removed nearly pure caffeine from the basic tea solution. Caffeine is a white‚ crystalline‚ bitter alkaloid‚ C8H10N4O2 ‚ usually derived from coffee or tea. Caffeine is used in medicine chiefly as a nervous system stimulant. Caffeine is used by humans to ward off
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Aim: To find the effect of temperature on enzymes‚ using a potato as a catalyst. The source of catalase is in the potato cells. 2H2O2 → O2 + H2O Planning: Introduction: An Enzyme is any one of many specialised organic substances‚ composed of polymers of amino acids‚ that act as catalysts to regulate the speed of the many chemical reactions involved in the metabolism of living organisms Enzymes are classified into several broad categories‚ such as hydrolytic‚ oxidising‚ and reducing‚ depending
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The truth about caffeine How many of you here consider yourself caffeine addicts? How much coffee do you drink a day? One cup? Two cups? More? If you crave caffeine to get you through the day‚ you’re not alone. About 68% of Americans say they’re hooked on coffee this year‚ compared with 64% last year‚ according to the National Coffee Association. But of course‚ Caffeine and related compounds are found not only in coffee‚ but also in tea‚ soft drinks‚ and chocolate. Most
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The Effects of a Low Literacy Rate Trina Heyrman Com/156 June 21‚ 2012 Pamela Brown The Effects of a Low Literacy Rate “The devil of illiteracy had been given a staging post in the temple of the written word” –Dean Koontz. While the benefits of a high literacy rate tend to speak for themselves‚ many people prefer to overlook the costs of a low literacy rate. A low literacy rate can affect just about
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THE EFFECTS OF MOLECULAR WEIGHT ON THE RATE OF DIFFUSION OF SUBSTANCES PRINCESS AYNAH D. SANGGACALA Biology 101.1 Professor Christina A. Barazona September 15‚ 2014 THE EFFECTS OF MOLECULAR WEIGHT ON THE RATE OF DIFFUSION OF SUBSTANCES In partial fulfillment of the requirement For Biology 101.1 By Princess Aynah D. Sanggacala Professor Christina A. Barazona September 15‚ 2014 ABSTRACT The effect of molecular weight on
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The Effect of Molecular Weight on the Diffusion Rate of Substances Jesselyn P. Rodriguez Group 4 Section X-2L August 13‚ 2013 ------------------------------------------------- ------------------------------------------------- ------------------------------------------------- ABSTRACT The effect of molecular weight on the rate of diffusion of substances is tested using two tests: the glass tube test and the agar-water gel test. In the glass tube test‚ two cotton balls were soaked
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stay up all night rewriting it. When 7 am rolls around‚ you’re exhausted and ready to sleep. There’s one thing that can keep you awake‚ caffeine! You buy a monster or an iced coffee and drink it during lunch. A teacher approaches and demands you throw your drink in the trash. You have no energy for the rest of the day‚ resulting in failing all your assignments. Caffeine should be allowed to have more energy‚ to help kids with headaches or other issues‚ and because they taste good and make kids happy
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The effects of caffeine on the heart rates of Daphnia. Introduction In the water flea‚ Daphnia‚ the single‚ small heart is easily visible when viewed under a low power microscope. The heart rate can be monitored and measured in different conditions‚ such as change in water temperature‚ or in this case‚ the concentration of chemicals added to the water they habitat. A change in daphnia heart rate under the influence of a concentration of caffeine solution creates a procedure providing an interesting
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