-Unknown Mixtures Lab- Purpose: The aim of this experiment was to find out the two substances of the unknown mixture from salt‚ sugar‚ dirt‚ and baking soda by looking at its properties. Hypothesis: Find the unknown substance by testing it out by heating it‚ pouring water‚ vinegar‚ and observing it . Procedure: 1) Materials- * 100ml of water * Vinegar * Bunsen Burner * 2 beakers * 1 spatula 2) First‚ do steps (3-6)to find out the properties of salt‚ sugar
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However‚ the original manufacturer‚ Kaufmann Ltd.‚ has gone out of business‚ and specifications for the part are unavailable. The purpose of this experiment‚ performed by Ryan Nelson‚ Peter Glascor‚ Eric Flowr was to determine the identity of the unknown polymer by comparing its properties to properties of other known polymers. Most likely‚ the part is one of the five following polymers: polyethylene‚ polypropylene‚ polystyrene‚ polycarbonate‚ poly(vinyl chloride). These are all extremely common
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Macromolecules Lab Purpose: to determine a method of testing for macromolecules. Materials: Knowns: Unknown: Test Solutions: Glucose solution Unknown solution Iodine solution Gelatin solution Benedict’s solution Starch solution Biuret solution Oil Brown paper Water Procedure: 1. Create a data table. 2. Label 5 test tubes with known solutions. 3. Add 10-20 drops of each known solution to respective test tubes‚ do not mix pipets! 4. Add 3-5 drops of
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A Comparative Essay between “Disabled” and “An Unknown Girl” Moniza Alvi reflects on India as her hand is hennaed by “an unknown girl” “in the evening bazaar”. The predominantly upbeat mood of this poem contrasts with the pessimistic mood in “Disabled” written by Wilfred Owen‚ a soldier in the First World War‚ stating his anti-war view through a poem on the life of a young soldier “sewn short at elbow”‚ crippled by war. In his poem‚ the difference between past and present allows Owen to reveal
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Identification of a Conjugated Diene from Eucalyptus Oil Purpose: The purpose of this experiment was to prepare the Diels-Alder adduct of the unknown Conjugated diene in eucalyptus oil‚ to separate the adduct‚ and identify the unknown diene from the melting point of it¡¯s adduct. Introduction: This experiment was performed using techniques of heating under reflux‚ vacuum filtration‚ recrystallization‚ and melting point measurements. These techniques were used to separate the Diels-Alder
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Cathy Do Professor Wurzbacher ENGL 2305 April 19‚ 2015 The Meaning of “Home” in Love Medicine and The Book of Unknown Americans Home is a word that has an emotional feel to it. Home can mean when we are talking about where we belong‚ a place be need‚ somewhere to feel safe‚ and someplace to be loved or to love. Some may say that home is wherever family is or where you loved ones are. Home can be seen as a physical location like the house you live in or general area you live in. Home can also be
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protocols. There identifying and implementing programs that addresses and mitigates the terrorist. The identification and implementation of these protocols provides and the new threat of terrorism has set into motions a new perspective on security‚ by establishing the National Response Framework (NRF)‚ the Threat and Hazard Identification and Risk Assessment (THIRA)‚ and the signs for identification of terrorist activity to provide a common set of standards. First‚ the National Preparedness System
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diseases can kill many people that are drinking water on the tap water and mostly on the drinking fountain; people might drink on a drinking fountain which is dirty because of the different people that are drinking and spiting their saliva on to it‚ bacteria can easily contaminate the water that is coming out from the drinking fountain. Bacteria’s are also found everywhere in the surroundings; even the sink in our home might have bacteria’s because of the dirty place‚ and in the school also have bacteria’s
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The Tomb of the Unknown Soldier in the Arlington National Cemetery contains the remains of American soldiers who fought in World War I‚ World War II‚ the Korean War‚ and the Vietnam War that cannot be identified. They sacrificed their lives and helped change the lives of people then and now. When our class visits Washington‚ D.C‚ it will be important for us to be a positive and sophisticated group of 8th graders. That’s important because we want to represent our state and country for tourists
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“Fear is the most potent weapon‚” said Faraaz Kazi. Fear of the unknown and fascination of death torments the minds of the boys and causes a big split of the group during the middle of the novel. In the novel Lord of the Flies‚ William Golding uses fear and death to threaten the boys as fear becomes paralyzing and unconquerable by the realization that the only thing the boys have to fear is fear itself. In the very beginning‚ the beast was something that only existed in the boys’ minds and practically
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