Magnesium Mg(Z=12) in Group 2 Alkaline Earth Metals The structure of the element: Giant lattice metallic structure of immobile positive metal ions surrounded by a ’sea’ of freely moving mobile electrons (so-called delocalised electrons). Physical properties: A moderately hard silvery-white solid; mpt 649oC; bpt 1090oC; good conductor of heat/electricity. Group‚ electron configuration (and oxidation states): Gp2 Alkaline Earth Metal; e.c. 2‚8‚2 or 1s2 2s2 2p6 3s2; (+2 only) e.g. MgCl2‚ MgO.
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References: Breast cancer statistics. (2010‚ March 17). Retrieved May 30‚ 2013 from http://www.cdc.gov/cancer/breast/statistics/ Capital purchase justification. (2012‚ June 07). Retrieved June 01‚ 2013 from http://customwritingtips.com/component/k2/item/8322-capital-purchase-justification.html Gerson ‚ J. (2013‚ May 16). Ontario’s outdated mammography machines may have allowed some breast cancers to go undetected: report. Retrieved May 31‚ 2013 from http://news
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Chemistry Physical and Chemical Properties Submitted by Date Submitted: February 2‚ 2014 Date Performed: January 31‚ 2014 Lab Section: Chem-180 Course Instructor: Professor Spenser Purpose The purpose of this lab experiment is to observe physical and chemical properties of substances which are also
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The Louisiana Purchase was an arrangement between the United States and France‚ in which the U.S. acquired approximately 827 thousand square miles of land west of the Mississippi River for $15 million. In 1801‚ Spain and France signed a secret treaty surrendering Louisiana to France. Thomas Jefferson realized that with this treaty‚ France suddenly posed a potential threat to America. If America did not purchase New Orleans from France‚ and with the change of ownership from Spain to France it could
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“Is Density An Intensive Property Of Matter?” By: Mikal Hayden - Gates A. Introduction The first unit we learned in chemistry was Alchemy. In this unit I learned about the extensive and intensive properties of matter. An extensive property is a property of matter that depends on the changes of the substances shape or amount. An intensive property is a property of matter that doesn’t depend on the substances shape or amount. The purpose of this investigation was to prove that density is
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Physical properties can be seen‚ touched‚ or even measured without the identity of the substance changing. The identity of the substance can be its shape or color. Three physical forms of a substance are solid‚ liquid‚ and gas. Water for example can transform into all three physical forms without its identity changing. The characteristic of water as a shape can be used as an example of a physical property. Water can be frozen into ice‚ vaporized‚ or liquidized. The shape of water as a solid is
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A detailed explanation‚ one paragraph or more in your own words‚ of the colligative property being discussed and why that property changes the way that it does when the amount of solute is increased. A detailed description‚ at least one paragraph‚ of a real-world application of the colligative property‚ including an explanation of how this application of the colligative property is important or useful to those affected. The real-world example must be one that was not mentioned in the lesson. An
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Identify and elaborate the three phases of purchase process model. Explain what happens during each stage. Consumer behaviour as individual‚ group‚ and organizational decisions as well as activities affected by intra and interpersonal variables that are involved in evaluating‚ acquiring‚ using and disposing of products‚ services‚ experiences‚ or ideas and the impact these processes have on consumer and society. There are three stages of model service consumption or also known as the consumer decision
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the disengagement of the United States in foreign affairs which was an highly persuasive ideology for presidents after him and the treaties they made with other nations to negotiate specific issues. For instance‚ the Louisiana Purchase was notably: “One of the greatest purchases of land acquisition in the United States”. After the Louisiana territory was seized by Napoleon Bonaparte and his military‚ the American colonists wanted to acquire the port of New Orleans as they sought lucrative economic success
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information for evaluating alternatives. Technical personnel are particularly important influencers. * Buyers have formal authority to select the supplier and arrange terms of purchase. Buyers may help shape product specifications‚ but their major role is in selecting vendors and negotiating. In more complex purchases‚ buyers might include high-level officers participating in the negotiations. * Deciders have formal or informal power to select or approve the final suppliers. In routine buying
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