reaches the market. Hence‚ as calcium carbonate reacts steadily with hydrochloric acid to produce carbon dioxide as well as two other substances‚ I investigated which type of an eggshell contains more calcium carbonate. This reaction cannot be used directly to titrate the calcium carbonate because it is very slow when the reaction is close to the endpoint. Hence‚ I carried out back titration by adding an excess of hydrochloric acid to dissolve all of the calcium carbonate and then titrating the remaining
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Honors Chemistry Final Exam Study Guide Multiple Choice- (51 points @ 1/2 point ea.) Identify the letter of the choice that best completes the statement or answers the question. ____ 1. The pair of elements that forms a bond with the least ionic character is |a. |Na and Cl. |c. |O and Cl. | |b. |K and Cl. |d. |Mg and Cl.
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ACKNOWLEDGEMENT First of all‚ we would like to say thanks to God‚ for giving me the strength and health to do this project work until it done. Not forgotten to our family for providing everything‚ such as money‚ to buy anything that are related to this project work and their advise‚ which is the most needed for this project‚ Internet‚ books‚ computers and all that as our source to complete this project. They also supported us and encouraged us to complete this task so that we will not procrastinate
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2¯ beryllium ion S sulfide example‚ the stem magnesium ion Se2¯ selenide for bromide is calcium ion Te2¯ telluride brom-. strontium ion barium ion Ag + silver ion N 3¯ nitride radium ion Ni2+ nickel ion P 3¯ phosphide 3+ 3¯ zinc ion Al aluminum ion As arsenide Systematic name (Stock system) copper(I) copper(II) iron(II) iron(III) tin(II) tin(IV) chromium(II) chromium(III) manganese(II) manganese(III) Common name cuprous cupric ferrous ferric stannous
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Experiment #8 – properties of Alcohols and Phenols Introduction As has been mentioned before‚ over 20 million organic compounds have been identified. If each substance had to be studied as an entity completely separate from all the other substances‚ the study of organic chemistry as a whole would be impossible; that is to say‚ even more impossible than you currently believe it to be. Fortunately‚ the subject can be organized and it is often organized around the concept of the functional group
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Scribd Extrascore Sample Questions - Answers Q.1: What are the µlaws of chemical combination¶? Ans: There are two important laws of chemical combination established by Lavoisier‚are as follows: (i) Law of Conservation of Mass The law of conservation of mass states that mass can neither be created nor destroyedin a chemical reaction.(ii) Law of Constant Proportions The Law of Constant Proportions which is also known as the Law of DefiniteProportions‚ was established by Proust
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w w ap eP m e tr .X w om .c s er UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Subsidiary Level and Advanced Level *8712516860* CHEMISTRY 9701/36 Advanced Practical Skills 2 October/November 2012 2 hours Candidates answer on the Question Paper. Additional Materials: As listed in the Confidential Instructions READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name on all the
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ferricyanide‚ K3Fe(CN)6 ferrous sulphate‚ FeSO4 sodium hydroxide‚ NaOH sodium chloride‚ NaCl hydrochloric acid‚ HCl potassium hydroxide‚ KOH potassium nitrate‚ KNO3 nitric acid‚ HNO3 trisodium phosphate‚ Na3PO4 sodium thiocyanate‚ NaSCN sulfuric acid‚ H2SO4 distilled water‚ dH2O B. Apparatus test tubes iron ring 250-mL beaker iron stand bunsen burner C. Others iron nails copper strip sand paper zinc strip pliers 2 III. Procedure A. Reactions of Iron with various Aqueous Solutions In determining
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Experiment 3: Enthalpy of Various Reactions Introduction A coffee cup calorimeter is an apparatus that is used to measure the quantity of thermal energy gained or lost in a chemical reaction. This experiment utilizes this apparatus‚ which is made from two styrofoam cups with plastic lids and a thermometer‚ to measure changes in thermal energy of various reactions. When using this type of apparatus‚ it is assumed that no heat is transferred between the calorimeter and the surroundings‚ and that
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Antibiotics The term anti biotic is defined as a drug derived from living matter or micro organism. Which either prevents the growth of other micro organism or destroy them. Classification * The spectrum of biological action of anti biotic * It mainly effective against gram positive bacteria. Eg.penicillin‚fucidin * It mainly effective against gram negative bacteria . E.g. strepomycin * It effective against protozao. Eg
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