Date:16 March 2010 | [Relational Database systems (cS274)] | The case study records information about scheduled and planned flights for an airline and the flight reservations made by customers. The key elements in the system revolve around Planned and Actual Flights‚ and the reservations made by customers of actual flights. | Contents Current Business Activities and Operations: 3 List of Business Rules: 4 Entities and Attributes: 5 Relationship Types: 6 Primary Keys: 7 Foreign
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ACIDS AND BASES The reason that acid-base reactions are so important is that many of the things you come into contact with on a daily basis are either acids or bases. Most fruits are acids‚ as are carbonated beverages‚ tea‚ and battery acid. Common household bases include baking soda‚ ammonia‚ soap‚ and antacids. What are acids and bases? There are not one but three common definitions used to describe acids and bases: 1. Arrhenius acids and bases 2. Brønsted-Lowry acids and bases 3. Lewis acids
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BRONSTED-LOWRY ACIDS AND BASES 1. The Bronsted-Lowry definition There are many definitions of acids and bases in existence‚ but the most useful one is the Bronsted-Lowry definition: An acid is a substance which can behave as a proton (re presented as a hydrogen ion‚ H+) donor. Any substance which contains hydrogen bonded to a more electronegative element can thus behave as an acid: HCl == H+ + Cl- H2SO4 == H+ + HSO4- A base is a substance which can behave as a proton acceptor. Any
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Experiment 4: ACIDS AND BASES: PH Measurements and Macroscale Titration CHM023L – A12 Group no. 6 Members: | Contributions: | | Conclusion | | Recommendation | | Tables and figures with analysis | | Principles‚ Equation | | Abstract‚ tables | Date Performed: February 28‚ 2012 - Tuesday Date Submitted: March 6‚ 2012 - Tuesday Submitted to: ------------------------------------------------- ABSTRACT: This experiment introduces us the pH measurement and application of macroscale titration
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on their pH. Substances may be * Acid 2. Base 3. Neutral INDICATORS This is a substance which is one color in and acid and another color in a base. Indicators can ten be used to test for the presence of acids or bases in a substance. Some are available in paper form (litmus) and others in liquid form (methyl orange). INDICATOR | COLOR IN ACID | COLOR IN BASE | LITMUS | RED |
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determined by colorimetric titration‚ and the identity of an unknown acid was determined by potentiometric titration. In the first titration‚ a strong acid standard‚ potassium hydrogen phthalate (KHP)‚ was used‚ to determine the concentration of a strong base‚ sodium hydroxide (NaOH). In order to do so‚ we prepared NaOH solution‚ prepared a buret‚ and standardized this solution by performing a colorimetric titration of the KHP with the solution until a color change was present. The color change was introduced
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Base Details Siegfried Sassoon’s epic war poem "Base Details" focuses on a soldier’s bitterness toward the fact that old men wage war while young men fight it. Sassoon uses various literary devices to express his anger toward such injustice. The main ones being rhyme‚ strong connotative words and especially diction. The speaker‚ a soldier in World War I‚ contemplates what it would be like to be an officer in during war. By using a sarcastic and cynical tone‚ he is effectively able to condemn war
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Base Details In the poem‚ “Base Details‚” Siegfried Sassoon expresses his great disgust towards the majors in the military. He is disgusted and appalled at the way the majors act while men are dying out in the battlefield. Sassoon is angered by the fact that the majors are living a life of luxury while sending young men “up the line” out into the battlefield. The title of the poem suggests these ideas. “Base” indicates a military installation‚ but another meaning is morally low; and the word “details”
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|(What effect does this have on the reader? How does it help communicate their message?) | | |“id live with scarlet majors at the base” |Live- and word that shows that the majors did not worry about things wile the soldier are suffering on the cold | |P1 – Point 1: |
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BMW – Product Life Cycle “Speaking of successful history: The automobile was invented in Germany about 120 years ago – not by us by the way. But that is another story. We have however‚ shaped the development of the automobile – for years and decades. Crucial‚ trendsetting innovations came and continue to come from BMW‚ from BMW Group’s excellent engineers. That much about history. The world has changed. And BMW Group needs to change as well (Reithofer‚ 2008).” When Dr. Norbert Reithofer‚ Chairman
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