Members: Cabatic‚ Sophia Mae E. October 1‚ 2012 Peria‚ Ellen Faith L. Tacula‚ Jassy Camille D.S. Activity 11 Acids and Bases I. Objectives * To identify some acids and some bases which are used in common household products. * To construct an operational definition of an acid and a base‚ using the characteristic properties of those substances. II. Procedure A. For acids * Place 2ml each of dilute acetic acid‚ hydrochloric
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ACID / BASE BUFFER SYSTEMS Abstract A buffer solution is a solution that contains both an acid and a salt containing the conjugate base / acid in sufficient concentrations so as to maintain a relatively constant pH when either acid or base is added. In this experiment a selection of buffer solutions (Bicarbonate/carbonic acid)‚ Lake water and distilled water were obtained to compare their buffering behaviours when mixed both with an acid and a base. The results showed buffering capacities for
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Benedict College Acid- Base Titration Jorge Moreno Chem 118LS4-133S Mr. Qin Purpose In the lab they want determine the concentration of a solution. One way that they have to
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expanding the genetic alphabet although it has only ever consisted of four natural bases. The four natural bases generally base pair to form A-T and C-G; however‚ the authors created an organism that consists of those in addition to another base pair: X-Y. Considering the fact that X and Y do not typically occur in nature‚ the authors actually ended up creating a semisynthetic organism (SSO) that has an unnatural base pair (UBP) and may be able to create new life. The numerous past failed efforts
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Counting with Base Ten Blocks Standards:1.NBT.2 A-C | Objectives: * Students shall understand and compute operations using base ten blocks. * Students shall understand numbers and ways of representing numbers‚ relationships among numbers and number systems. | Activities: -Students will review adding and subtracting with base ten blocks. They will get a pre-made laminated sheet with indicators of each base – ones‚ tens‚ hundreds‚ thousands. I will give them different problems on the board
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National Museum in Abidjan Though many of this museum’s treasures were lost from looting during the political unrest over the last decade‚ the National Museum in the city of Abidjan still contains a fascinating collection of artifacts that tell the country’s history from the Stone Age to the present. Among these are musical instruments‚ pottery‚ coins and tools. Parc du Banco in Abidjan Located just north of the Abidjan city limits‚ this 7‚500 acre park is home to a diverse collection of hard
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Late 1800s to 1907 The were many art movements within this time period. I am going to show you some of well known one and unknown artist. Impressionism In 1874‚ a group of artists called the Anonymous Society of Painters‚ Sculptors‚ Printmakers‚ etc. organized an exhibition in Paris that launched the movement called Impressionism. Its founding members included Claude Monet‚ Edgar Degas‚ and Camille Pissarro‚ among others. Impressionism was a movement that occurred in both art and poetry. It
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regulate by controlling their pH levels for proper functions of enzymes. Problem: How do acids and bases affect living cells? Hypothesis: If the amount of acid/base that is exposed to a living cell increases then the cell’s pH level will remain neutral because of the buffers that are within the living cell. The buffers will be able to neutralize small increasing amounts of acids and bases that are exposed to the cells; thus maintaining the pH levels that are exposed to the cells making it
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Acids‚ Bases and Buffers Lab Acids‚ Bases and Buffers Lab Results: The experimental results for part one is as follows: Part One Data Table | Initial pH | Final pH | Test Tube A | 6 | 1 | Test Tube B | 4 | 4 | Test Tube C | 4 | ----- | Test Tube D | 4 | 4 | Test Tube E | 6 | 11 | The experimental results for part two is as follows: Part Two Data Table | Before CO2 was Added | After CO2 was Added | Colour | Blue/green | Light green/yellow | pH Level | 8.0pH | 5.0pH |
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Acid-Base Titration Pre-Lab Discussion In the chemistry laboratory‚ it is sometimes necessary to experimentally determine the concentration of an acid solution or a base solution. A procedure for making this kind of determination is called an acid-base titration. In this procedure‚ a solution of known concentration‚ called the standard solution‚ is used to neutralize a precisely measured volume of the solution of unknown concentration to which one or two drops of an appropriate acid-base
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