Determination of Cations and Anions through Elimination and Confirmation Tests By: Symantha Resendiz Introduction A topic of great importance to all scientists is the identification of compounds‚ which is relevant in all aspects of their work in some way shape or form. Weather it may be determining what is causing sickness or what is polluting the air‚ it is very prevalent in the science world. In project 2‚ identification of cations and anions was preformed through a series of confirmation
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The Crime Lab Project is a non-profit corporation with a blog created for “raising awareness of public forensic science needs and challenges”(What is the Crime Lab Project 1). By reinforcing forensic science education and research‚ forensic science can contribute to a more just society‚ and in turn better everyone’s lives. ¨A recent congressionally mandated report by the National Academy of Sciences found¨ that there are serious deficiencies in the nation’s forensic science system and are in much
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Name: ______________________________________________ CHEM 102 – SPRING 2014 Study Guide: Exam 1 The following questions should assist you in your preparation for Exam 1‚ but does not include everything that you are responsible for knowing for Exam 1. Use your textbook‚ class notes‚ and past homework assignments in addition to this guide to prepare for Exam 1. 1. What are the differences between solids‚ liquids and gases with respect to molecular velocity‚ density‚ shape and volume?
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Lab: investigating hooked law with springs Purpose: to find spring constants of different springs using the slope of a graph of change in heights vs. the weight force. Also‚ to be able to understand how spring constants change when you add springs in a series or paralle Pre lab predictions: We predicted that the graph of gravitational force (mg) as a function of stretch (delta x) would look like Data: Spring #1: y = 8.2941x + 0.0685 This table represents the different distances that
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Chapter 11 Gases assumes both shape and vol of the container compressible‚ form homogenous w/ 1 another D is smaller then liquids/solids and highly variable depending on T and P Kinetic Molecular theory 3/2RT = total kinetic energy ½ mu2 = average kinetic energy Urms speed of mol with average kinetic energy‚ its inversely proportional to the square root of M when T is the same EX. Determine how much faster a helium atom moves‚ on average‚ than a carbon dioxide molecule at the same temperature
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In the IUPAC system of nomenclature‚ functional groups are normally designated in one of two ways. The presence of the function may be indicated by a characteristic suffix and a location number. This is common for the carbon-carbon double and triple bonds which have the respective suffixes ene and yne. Halogens‚ on the other hand‚ do not have a suffix and are named as substituents‚ for example: (CH3)2C=CHCHClCH3 is 4-chloro-2-methyl-2-pentene. If you are uncertain about the IUPAC rules for nomenclature
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The Chemistry of Cosmetics Cosmetics are an excellent example of how discoveries in chemistry are part of our day-to-day lives. In fact‚ just reading the composition of any common cosmetic can become a chemistry class: water‚ emulsifiers‚ preservatives‚ thickeners‚ pH stabilizers‚ dyes and fragrances‚ combined in different ratios‚ for different purposes. The use of cosmetics – that is‚ chemical compounds to improve our appearance – is not a recent phenomenon. It is said that the Egyptian queen Cleopatra
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Multiple Choice: (42 points) Chapter 15: Principles of Chemical Equilibrium dynamic equilibrium equilibrium constant reversibility LeChâtelier’s Principle ICE table Q and Keq major species minor species Keq‚f vs Keq‚r rate constant vs. equilibrium expressions significance of magnitude of Keq equilibrium shift with concentration changes equilibrium shift with temperature changes equilibrium shift with volume changes Chapter 16: Acid-Base Euilibrium
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Biochemistry Enzymology and Catalytic Mechanism & Carbohydrate Metabolism‚ Adenosine Triphosphate (ATP) Your Name Here WGU Abstract Many diseases and disorders are caused by defects in the molecular level of cells and not just having to do with nutrition or other extrinsic factors ‚in this report ‚we will specifically look at enzymes and their key role in energy production and the cycles and series of activities that make it possible for the human to function properly .
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Chemistry June Exam Notes Quantities in Chemical Reactions Molecular and formula mass o The mass of one unit of a compound (a molecule or a formula unit) o The sum of the mass of all the atoms in a compound o With knowledge of the mass of each individual atom‚ the percentage composition by mass can be determined The Mole (mol) o A counting unit‚ one mole refers to 6.02 x 1023 particles of any given substance o Known as Avogadro’s Constant and given the symbol NA Molar Mass o The
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