• Lol Chemistry
    atoms and molecules. Atomic and molecular masses. Mole concept and molar mass; percentage composition and empirical and molecular formula; chemical reactions, stoichiometry and calculations based on stoichiometry. Unit II: Structure of Atom (Periods 16) Discovery of electron, proton and neutron; atomic...
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  • Bacon
    Acid and Base Lab: Measuring p H of Household and Food Products Name_______________ Date_______________ Introduction A liquid may be an acid, base, or neutral. The degree of acidity or basicity can be measured...
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  • titration
    flames as it is flammable. Handle acids and bases carefully as they are corrosive. Rinse skin with lots of cool water if splashed with chemical and report any spills to the teacher immediately. Source: Nelson Chemistry 11 (2010) ACID BASE TITRATION Purpose: To determine...
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  • Acids and Bases
    ACIDS AND BASES |What is an acid or a base? |Properties of acids. | |Properties of bases. |Strong acids and bases. ...
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  • Experimen 8 – Calorimetry
    metal one degree Celsius. Latent heat of fusion of water – the energy required to convert one gram of ice at 0 0C to one gram of water at 0 0C. Heat of solution of a salt – the energy involved in dissolving one gram of a solid in water. Heat of a reaction – the energy gained or lost in the chemical process ...
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  • Chemistry Past Paper
    Paper Reference Initial(s) 7 0 8 1 7081/02 0 2 Signature Examiner’s use only London Examinations GCE Chemistry Ordinary Level Paper 2 Monday 19 January 2009 – Morning Time: 2 hours Team Leader’s use only Question Leave Number Blank 1 2 3 4 5 Materials required for examination...
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  • Antacids
    Formal Lab Report Analysis of Antacid Tablets I. Introduction An acid-base titration is a method of neutralizing strong acids. Unbeknownst to many, acid-base titrations occur on a daily basis. Our stomachs use acid to help us digest our food – approximately .155 hydrochloric acid...
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  • Chemistry Igcse
    So how do you find the electron configuration? Well let’s use potassium (K) as an example. Look up the atomic number of potassium. It should say 19. This tells you the number of protons, which is equal to the number of electrons so we can use that. Arrange the electrons in shells, always filling...
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  • Batch Reactor
    De-esterification for Synthesis of Benzoic Acid BATCH REACTOR Shane Bulk Chris Crosley David McGuire Max Skula Yunjing Song Shriram Sundarraj Nelson Zhou 155:416 Process Laboratory II Professor Jerry Sheinbeim January 28 – February 28, 2014 ABSTRACT The observed reaction that took place in this experiment...
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  • martin luther
    particles. Na = Avogadroës Number = 6.02 x 1023 The mole is important because: It allows us to weigh atoms in the lab. It allows us to compare amounts of atoms in chemical reactions. Basic mole calculations: convert mass to moles, and moles to molecules or atoms. These equalities are used in...
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  • Fuckzzzzzz
    marks that fairly reflect the relevant knowledge and skills demonstrated. Mark schemes must be read in conjunction with the question papers and the report on the examination. • CIE will not enter into discussions or correspondence in connection with these mark schemes. CIE is publishing the mark...
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  • Aqueous solutions
    Aqueous Solutions Reactions, Metathesis (Double Replacement) Reactions and Net Ionic Equations Terrance Shelton Introduction India’s cultural treasure and biggest tourist attraction is slowly losing its magnificent appeal due to decades of acid rain. The walls of the Taj Muhal are composed of a...
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  • Lab Work Chemical Changes
    Observation of Chemical Changes Purpose In this experiment, the student studied the composition of materials in a setting where the indications of chemical changes were safely observed. The changes observed consisted of bubble formation, colors, viscosity, and precipitate formation. Procedure...
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  • respiration
    calculate the molar concentration of a strong acid (HCl) – HOW? – Through titration Techniques • Titration • Need reproducible results – 3 trials are performed (3 titrations) • Accuracy is important Lab Outline • The concentration of a sodium hydroxide will be determined by titration with...
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  • Fz1026 - Introduction to Chemical Concepts Assignment Brief
    specific to that particular element? The alkali metal, sodium, positioned in group 1, period 2, was first discovered in 1807 by Humphrey Davy by electrolysis of molten sodium hydroxide. The element has been named as sodium by Davy, due to the use of caustic soda as his source of the element.(1) In Germany...
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  • Profects
    of it in a washed titration flask. 2. Rinse and fill the burette with the given KMn04 solution. 3. Add one test-tube (15 ml) full of dilute sulphuric acid (2 N) to the solution in the titration flask. 4. Note the initial reading of the burette. 5. Add KMn04 solution from the burette till a permanent light...
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  • Paperr
    Classifying Chemical Reactions Lab Period 3 Simona Williams Purpose The purpose of this lab is to observe a wide range of different chemical reactions and to classify patterns in the conversion of reactants into products. The properties of the reactions will be identified to distinguish the chemical...
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  • Recovery of Elemental Copper from Copper (II) Nitrate
    Copper (II) Nitrate Objectives: Students should be able to… recognize evidence(s) of a chemical change convert word equations into formula equations perform a series of chemical reactions in order to recycle the element copper determine the percent recovery of elemental copper Challenge:...
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  • Biology Lab
    ..................................................... 258 4. Cardiac Enzymes ............................................................... 266 5. Acid Phosphatase............................................................... 279 6. Alkaline Phosphatase................................................
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  • Antacids - 1
    acidity. They are used to relieve acid indigestion, upset stomach, sour stomach, and heartburn. ACTION MECHANISM Antacids perform a neutralization reaction, i.e. they buffer gastric acid, raising the pH to reduce acidity in the stomach. When gastric hydrochloric acid reaches the nerves in the gastrointestinal...
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