Chemical Bonding Chemical compounds are formed by the joining of two or more atoms. A stable compound occurs when the total energy of the combination has lower energy than the separated atoms. The bound state implies a net attractive force between the atoms ... a chemical bond. The two extreme cases of chemical bonds are: Covalent bond: bond in which one or more pairs of electrons are shared by two atoms. Ionic bond: bond in which one or more electrons from one atom are removed and attached to
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Chemical Senses OLFACTION The sense of smell. Begins with the detection of molecules suspended in the air Olfactory stimuli Must be soluble in fat Taken through the nostrils and circulated within the nasal cavities connected to the nostrils. Olfactory epithelium Thin sheet of cells which contain neural receptors for olfaction Contains olfactory receptor cells and glia-type support cells that produce mucus Also contains basal cells which give rise to new receptors when needed Olfactory
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Chemical Proportionality (Carbonate and Hydrochloric Acid) Introduction: The purpose of this experiment is what happens when a solid substance‚ a metal carbonate is added slowly to a solution of an acid. We are finding methods of determining acid concentration. For us to balance certain equations‚ we will use a stoichiometry. For this experiment‚ we will need to set up the ratio and finding the concentration of HCI. Procedure: • Grab 4 different beakers. • Add a small amount of sodium carbonate
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Impact of International Trade and European Union on the British Companies Table of Contents 1. Introduction 1 2. Findings 2 2.1. Benefits of International Trade 2 2.1.1. Adoption of technologies 2 2.1.2. Access to raw materials 2 2.1.3. Lesser dependency on one market 2 2.2. Relation of British Companies to the World Economy 2 2.3. The impact of European Union policies on British manufacturing organizations 2 2.4. Policies Impacting Decisions for Export within the EU
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Chemical Reaction Lab Well #1 CuCl2 + Al (shot) - Bubbling - Turning reddish-maroon - 33oC Well #2 CuCl2 + Al (foil) - Bubbling‚ but less than well #1 - Turning black - 28oC Well #3 CuCl2 + Zn - Turned black then red - No bubbling - 29oC Well #4 CuCl2 + NH4OH - Cloudy - No bubbling - 26oC Well #5 CuCl2 + NaCO3 - Not mixing with CuCl2 - Heterogeneous - 25oC Well #6 CuCl2 + AgNO3 - Cloudy - Top layer is white -29oC 1. The more pronounced reaction was the aluminum
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CHEMICAL MEDIATORS OF INFLAMMATION Cell derived mediators Mediator | Source | Function | Vasoactive amines | Histamine | Mast cells‚ basophil‚ platelet | Vasodilation‚ ↑ vascular permeability‚ endothelial activation | Serotonin | platelets | Vasodilation‚ ↑ vascular permeability | Eicosanoids | Prostaglandins | Mast cells‚ leukocytes | Vasodilation (PGD2‚PGE1‚E2 & PGF2-α)‚ pain (PGE2)‚ fever | Thromboxane A2 | | Promotes platelet aggregation‚ vasoconstriction | Prostacyclin
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Long before the globalisation‚ the internet and advanced telecommunications many companies with an international orientation have applied expatriate managers - some even since the early days of international trade. The theme for this essay is critically to evaluate the reasons why international companies continue to use expatriate managers even though it is a very expensive option. The term expatriate originates from the Latin words ex patria (out of fatherland) and refers to an employee from
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the economic and financial position of a company to actual and potential stakeholders. 2. to understand the numbers‚ getting behind the figures‚ and use the understanding to better manage a business. FINANCIAL STATEMENT ANALYSIS Is the art of analyzing and interpreting financial statements. Thus‚ one may develop various analytical measures to portraits meaningful relationship and extract information from raw financial data. Overview of company performance analysis 1. Understand Financial
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Chemical Separation Introduction: The objective of this experiment was to extract the pigments from spinach leaves‚ perform Thin Layer Chromatography (TLC) on the spinach leaf extract‚ and then determine the best solvent mixture to use to separate the pigments in the extract. The pigments are located inside the chloroplast walls in the cells of the spinach leaves. In order to obtain the pigments the cell walls must be broken down thus exposing the pigment containing chloroplasts. Upon
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International Mergers If you had been a shareholder of Dow Jones‚ what tradeoffs would you have considered when deciding whether to take the $60 per share or the shares of Ruby Newco? If I had been a shareholder of Dow Jones at the time of their acquisition‚ I’d opt for the $60 per share in stock. According to McIntyre (2007)‚ Dow Jones stock made no progress from 2004 to early 2007 and by the end of 2004‚ the shares traded around the $40 mark with last month shares being in the $34 to
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