The purpose of this lab was to determine, by analyzing a class histogram, if the boiling point of a substance is a characteristic property and to determine if the time it takes to boil affects the boiling point. To conduct this experiment, the group must be sure to add a few boiling chips to their substances before heating to dispense heat and ensure even heating. Also, the group should use a burner stand for gentle heating of the substance. During this investigation, it was determined that when
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Most chemical reagents were purchased from Sigma-Aldrich Chemical Co. (St. Louis, MO, USA) and used as received without further purification. All the reactions were carried out under a dry nitrogen atmosphere, unless stated otherwise. Solvents were dried using the standard method. 4,4'-Dicarboxy-2,2'-bipyridine (dcbpy), 4,7-dicarboxy-1,10-phenanthroline (dcphen), 4,4'-bis(E-carboxyvinyl)-2,2'-bipyridine (dcvbpy), 4,7-bis(E-carboxyvinyl)-1,10-phenanthroline (dcvphen), and 5-(2-[2,2'-bipyridin] -5-ylethynyl)-22'-bipyridine
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In this experiment I will be using yeast and six different types of berries, (acai berries, blackberries, blueberries, cranberries, strawberries, and raspberries). I am using yeast because yeasts are unicellular, eukaryotic microorganisms. Since yeast is the Fungi kingdom, there are approximately 1500 different species of yeast and many of them have different characteristics. Also yeasts reproduces about every 100 minutes and most do so asexually by mitosis. When compared to bacteria and some other
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Background Information Like all other living organisms, yeast thrives best in environments that are suited to its personal needs. Factors that determine how well an environment is suited for an organism include the amount of sunlight present, pH level of liquids around them, and the temperature of their surrounding atmosphere. This experiment will be testing the effect of different temperature levels on different categories/types of yeast. Yeast is a one-celled, eukaryotic organism that produces
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Temperance movements typically criticize alcohol intoxication, promote complete abstinence teetotalism, or use its political influence to press the government to enact alcohol laws to regulate the availability of alcohol or even its complete prohibition. Th temperance movement began in the 1820s of the early 19th century. But before I happened there were pieces that were published against drunkenness and a total abstinence from alcohol uses. It was rarely advocated and practiced. The temperance movement
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preservation of organic material, medicine and drugs, alcoholic beverages and even as fuel. Man made alcohol can be traced back to the 15th century but was widely used when Samuel Morey created an engine that used ethanol and turpentine in 1824. After the creation of this engine ethanol has been widely produced for fuel but it has been used for modern medical purposes.Alcoholic beverages, beer, has been dated back to the time of the cavemen and even Sumerian writing
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In the beginning of the sixteenth century, European culture was focused on traditional aristocratic views and society was not comfortable with revolutionary change. During the same time, alcohol, a depressant, was a common social drink amongst all statues. The mind-numbing drink decreased productivity, as well as innovating thoughts. Alcohol essentially encouraged people to be content with the way things were, as it provided no stimulation to change inherited beliefs. Fortunately, a stimulant was
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Organic based solvents are used commonly in the world of drug synthesis, however their residues are undesirable. Many techniques are used to remove them due to the fact these residues can negatively alter the drugs in pharmaceuticals. This is due to their toxicity, influence on the quality of crystals, and their odor or taste which can be unpleasant for the patients that are receiving the drug.1 Although manufacturing techniques are available to get rid of the solvents, not all of the solvent is
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Set out materials on a sizeable, open surface. Choose and create three to five concentrations of the Original, Diet, and Caffeine Free Coke. These will be used to make the solutions for which will have Daphnia placed into them to allow heart rate measurement. (How to create concentrations: For example (in mL), a twenty five percent solution would be represented in the ratio 1:4. The twenty five percent would consist of the liquid that is desired to be used; in this case, it is soda. The remaining
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