Spirit Burner Experiment Aim: To perform an experiment in the labs to determine the heats of combustion of selected alcohols and then to use this information and the gathered data from chemical data sources to determine trends in the longer chain alcohols. The Variables that MUST be controlled throughout the experiment are: • The height from spirit burner nozzle to the base of the water filled beaker • Air drafts around the room must be kept to minimum so as to keep the heat on the base of the
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how the viscosity of blood will also effect the resistance of blood flow in a blood vessel. Observation: My mom is a big Elvis fan and she always wondered how his health affected his death. Knowing that he had high cholesterol and high blood pressure I decided to do an experiment on what factors may have had an effect on his high cholesterol and high blood pressure. Hypothesis: I know that the longer the length of the tube‚ the smaller the diameter of the tube‚ and the thicker the viscosity of a substance
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Equation A: Synthesis of 2‚3‚4‚5-tetraphenylcyclopentadienone: A solution of 4 capsules potassium hydroxide (0.5g) and 5mL anhydrous ethanol was prepared and warmed in a 25mL beaker. Benzil (2.1542g) ‚ dibenzyl ketone (1.9599g) ‚ 15mL anhydrous methanol‚ and a boiling stone was placed into a 50mL round-bottomed flask and fit with a reflux condenser and then gently heated. The temperature was raise nearly to the boiling point‚ and the solution of potassium hydroxide and anhydrous ethanol was added
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05g‚ 10mmol) benzaldehyde through the condenser with graduated syringes. 3. Continue to heat at reflux for 30 min. WORK-UP 1. Cool mixture to room temp. “if low crystals‚ can add a little methanol and cool” 2. collect colored product by suction filtration‚ filter twice if needed 3. wash with methanol until it runs clear‚ then dry for several minutes. 4. determine percent yield (weight)‚ record UV/Visible spectrum (CHCL3) and determine lambda max. Step 2: Preparation of TPP Copper Complex
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quicker the reaction. Therefore‚ SN1 reactions desire tertiary substrates most‚ followed by secondary‚ and lastly primary. Because the strength of the nucleophile is unimportant‚ an ionizing solvent is needed. Water is the best solvent‚ followed by methanol‚ ethanol‚ propanol‚ and lastly acetone. In experiment two‚ the tertiary 2-bromo-2-methylpropane was the most favored reactant followed by the secondary
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Chapter II REVIEW OF RELATED LITERATURE AND STUDIES Review of Related Literature On mosquito larvae‚ the major larval habitats were anthropogenic‚ resulting from human behavior. According to the Journal of Vector Ecology (2012 p37) stated that “The management of insecticide resistance among malaria vectors needs urgent attention if insecticide-treated materials can continue to be used for malaria control.” Metarhizium anisopliae‚ a fungal pathogen of terrestrial arthropods‚ kills the aquatic larvae
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spinosus‚ Amaranthus caudatus and Amaranthus viridis L. They belong to the Amaranthaceae family and are traditionally used as vermicides. Our aim was to investigate the anthelmintic activity of the three plants using earthworms (Pheretima posthuma). Methanol extracts of the three plants at different concentrations (10‚ 20‚ 40‚ 60‚ 80‚ 100 mg/ml) showed dose-dependent vermicidal activities. At concentrations of 80 and 100 mg/ml all three plant extracts caused paralysis (8.18‚ 5‚ 12.16‚ 5.75‚ 10.2‚ 7.8
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This did not support the hypothesis that the influence of the increasing partition coefficient would dominate over the increase in molar volume across these molecules‚ causing a decrease in hemolysis times from methanol to ethanol to propanol. Experiments have shown that the membrane permeability of short-chain alcohols‚ like the ones studied in this lab‚ has a chain-length dependency. As the length increases and the molecules gain more CH2 groups‚ the membrane
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not. The CARBOSE‚ and sand will dissolve in the liquid solvent and the naphthalene will remain in the solid phase. In the other substances methanol and mineral spirit were not soluble in both Carbose and sand. Also in naphthalene mineral spirit was not soluble.
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mcvm se arrows in the spaces for questions 6 through 10. 6. A in hematocrit will result in ____ blood viscosity and ____ blood pressure. 7. Growth will result in ____ total vessel length and a/an ____ in blood pressure. 8. Arteriosclerosis will result in ____ vessel elasticity and a/an ____ in blood pressure. 9. Excessive sweating will result in a short - term ____ in blood volume and a/an ____ in blood pressure. 10. An in epinephrine will result in ____ vessel diameter and a/an
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