Determination of the %Ethanol Present in Alcoholic Beverages Department of Chemistry‚ University of Santo Tomas‚ Manila‚ Philippines Abstract Given a 25.0 mL commercial alcoholic beverage‚ the group is expected to be able to compute for its alcohol content with the use of their background and recently-taught knowledge of the process of distillation‚ which is the technique that is to be applied for the experiment .Knowing ethanol’s‚ which is the chemical present in all alcoholic drinks‚
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12.097 Environmental Chemistry of Boston Harbor – IAP 2006 Lab 1: DETERMINATION OF DISSOLVED OXYGEN BY WINKLER TITRATION 1. Background Knowledge of the dissolved oxygen (O2) concentration in seawater is often necessary in environmental and marine science. It may be used by physical oceanographers to study water masses in the ocean. It provides the marine biologist with a means of measuring primary production - particularly in laboratory cultures. For the marine chemist‚ it provides a measure of
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Determination of a Rate Law Megan Gilleland 10.11.2012 Dr. Charles J. Horn Abstract: This two part experiment is designed to determine the rate law of the following reaction‚ 2I-(aq) + H2O2(aq) + 2H+I2(aq) + 2H2O(L)‚ and to then determine if a change in temperature has an effect on that rate of this reaction. It was found that the reaction rate=k[I-]^1[H2O2+]^1‚ and the experimental activation energy is 60.62 KJ/mol. Introduction The rate of a chemical reaction often
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The pH of various mixtures and find the dissociation constant of acetic acid Chemistry (HL) Research Question: To determine the pH of various mixtures of sodium acetate and acetic acid in an aqueous solution and hence to find the dissociation constant of the acetic acid. Background: The mixture of sodium acetate and acetic acid in aqueous solution is a buffer solution. Buffer solutions are the solutions which resist a sudden change in the pH due to addition of small amounts of strong acid or base
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the solubility of dissolved oxygen and to demonstrate the interference of nitrite in dissolved oxygen analysis by the Winkler Method. To demonstrate the use of the oxygen electrode and the difference between activity and concentration. References 1. Mancy‚ K. H.‚ Jaffe‚ T.‚ "Analysis of Dissolved Oxygen in Natural and Waste Water‚" USDHEW Public Health Service‚ Pub. 999-WP-37‚ Cincinnati‚ Ohio‚ 1966. 2. Standard Methods‚ 17th ed.‚ American Public Health Association‚ 1989. 3. Stumm‚ W.‚ Morgan
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What is an epic hero? Beowulf was an archetype or‚ perfect example of what an epic hero is. Being infallible‚ he had many characteristics that showed this. Three of them are strength‚ bravery‚ and determination. Beowulf was always eager to face anything he was challenged with. Beowulf possessed superior physical strength. If weapons were useless he’d use his hands and the strength in his fingers. (218-220) Beowulf was the strongest of the soldiers. When he was called to fight for his people
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2278-7763 461 DETERMINATION OF THE LEVELS OF NITRITE IN HOMEMADE BREWS‚ SPIRITS AND RAW MATERILS USED USING UV – VISIBLE SPECTROSCOPY IN NAIROBI COUNTY Jeremiah O. Masime*‚ Ruth Wanjau‚ Charles Onindo Kenyatta University‚ Chemistry Department‚ School of Pure and Applied Sciences ABSTRACT Homemade brews and the raw materials used can be a major source of nitrate and nitrite in human diet. Because of the potential health hazards result in high intake of nitrate and nitrite‚ determination of these ions
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that Helen Keller offers in her story is about Perseverance and Determination. She develops this theme because in her story she did go through a major change in her life. The impact and lessons readers took away from The Story of My Life is the value of perseverance. Without the ability to see or hear‚ Keller learned to function and interact within the community in a meaningful and healthy way. Her motivation‚ commitment‚ and determination to make a place for herself in the world started when she was
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If supply curve shifts‚ how it is going to affect the market equilibrium. How market will resettle to the new equilibrium?? Changes in price result in movement along the supply curve‚ changes in other relevant factors cause a shift in supply‚ a shift of the supply curve to the left or right such a shift results in a change in quantity supplied for a given price level. If the change causes an increase in the quantity supplied at each price level. If the change causes an increase in the quantity
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At its threshold‚ he passed the Harvester‚ Who sensed the determination of the huntsman. He besought him to reconsider continuing forward; “You will not make it far like that!” he warned. The huntsman scoffed at the first beast’s warning Presuming his words were a means of intimidation. He continued into the woods‚ where the next of the five waited‚ Leaving the gentle Harvester in a daze. Well‚ days passed‚ then weeks‚ and then months; And there was no evidence of the huntsman’s return. Many wondered
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