gray/white rocks Acetic Acid Looks like a clear liquid Solution of Sodium Thiosulfate Looks like a clear liquid Granular Zinc Looks like shredded pieces of silver Iodine Crystals Looks like small silver balls Zinc Ion and Iodine-Iodide-Triiodide ion in water Looks like a brown liquid Solid Zinc Iodide Looks like a white powder Mineral Oil Looks like a clear liquid Silver Nitrate Looks like a clear liquid Magnesium Turnings Looks like a small silver curved figure 3M Hydrochloric Acid (HCL) Solution
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report discussing the purity of my aspirin sample I produced. When I carried out the experiment to produce an aspirin sample I had to take a few results I had gained from carrying out the experiment later used these to work out the experimental error and percentage % yield. The results I used where the published value of what temperature pure aspirin melts at‚ the temperature my aspirin sample melted at‚ the weight of pure aspirin and the weight of impure aspirin. Firstly I worked out the experimental
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THE MOLE A mole (symbol Mol) is the base unit of quantity of a substance in the metric system. A mole is the quantity of a substance that contains 6.02 x 1023 units. A "unit" is the smallest measurable entity in the substance‚ generally either an atom or a molecule. The number of units in a mole was determined by Italian chemist (a scientist specializing in the composition‚ structure‚ properties‚ and reactions of matter) Amedeo Avogadro (1776-1856)‚ one of the founders of modern physical chemistry
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Hydrochloric acid affects the Rate of Reaction with Calcium Carbonate Rate This Paper: 1 2 3 4 5 Length: 3036 words (8.7 double-spaced pages) Rating: Red (FREE) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - An Investigation to see How the Concentration of Hydrochloric acid affects the Rate of Reaction with Calcium Carbonate I am going to investigate how concentration of hydrochloric acid affects the rate of reaction between hydrochloric acid and
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To detect an acid‚ the scientists use indicators. Litmus is one indicator. An acid turns blue‚ litmus red. Acids are a group of chemicals with very similar properties. An acid is a sour-tasting substance. Lemons taste sour because they contain citric acid. The sour milk contains lactic acid while the sour taste of vinegar is due to acetic acid. Acetic acid‚ which is an ingredient of vinegar‚ releases only a limited number of ions and is not a strong acid. All these are weak acids. This is the reason
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ids Acids‚ Bases‚ Buffers and Respiration Darlene E. McDonald WCCC Fall 2012 Ap Lab 071-07 Dr. Roxanne Levandosky August 31‚ 2012 I. INTRODUCTION: A.PURPOSE: a. To define and understand the key terms. ~acid ~buffer system ~base ~acidosis ~pH ~alkalosis ~pH scale ~hypoventilation ~pH indicators ~hyperventilation b. To determine the acidic or base nature and actual pH of various substances. c. To discuss the formation of the carbonic acid/bicarbonate ion
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Melissa Carrithers AP Chemistry period 6 2-11-15 Determination of Ka of Weak Acids Purpose: The purpose of this lab is to find the strength of weak acids by determining the equilibrium constants for their ionization reactions in water. Is to use their measured pH values to calculate the pKa for the two unknown weak acids thus determining their identities. Hypothesis: If we neutralize a solution that contains a weak acid by adding a strong base to the solution‚ then the ions will be isolated and
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Lysergic Acid Diethylamide (LSD) was created by chemist Albert Hofmann in Switzerland while attempting to create a blood stimulant. The drug was utilized for psychological experiments for many years and this even led to the military experimenting with it as a biological weapon in the 1960’s. During the 1960’s‚ as a result to the wide dispensing of the drug for experimental purposes‚ it wound up being the “…counterculture used the drug to escape the problems of society…” (LSD: A Short History). Due
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Running Head: Factors Affecting Citric Acid Production by Aspergillus niger Factors Affecting Citric Acid Production by Aspergillus niger Ong Chia Swing‚ Student. Nilai University 1. Introduction Citric acid is a natural preservative or conservative that is used to add an acidic‚ sour taste to foods and beverages. In the context of biochemistry‚ the conjugate base of citric acid which is the citrate plays an important role as an intermediate in the citric acid cycle which occurs in the metabolism
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Titrations: The Indirect Iodimetric Analysis Ascorbic Acid Unknown Number 69 I: Purpose: To determine the percent weight of Ascorbic Acid in unknown sample. This was to be done by the means of an indirect iodimetric analysis. In an iodometric analysis‚ the oxidizing agent can be determined by a different means than titrating directly with standard iodide‚ because a high concentration of I- is needed to form the I3- complex. In this type of analysis‚ excess iodide is added to the oxidizing agent‚ and the
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