Essay Title: “Freud’s case histories illustrate very clearly some of Freud’s most basic theories‚ such as his theories of identification‚ the role of transference‚ and the way in which the symptom is a formation of the unconscious.” “Freud’s case histories illustrate very clearly some of Freud’s most basic theories‚ such as his theories of identification‚ the role of transference‚ and the way in which the symptom is a formation of the unconscious.” I have chosen the Ratman as the case history
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The yield of a metal from a particular mineral or ore is the mass of metal that can be obtained from a particular mass of the mineral or ore‚ and is often expressed as a percentage. It is possible to use formulae to calculate/predict yields of metals from particular minerals (pure compounds)‚ for ores we have to measure them experimentally. This is because ores are mixtures of the required mineral and unwanted material‚ and‚ being mixtures‚ they have variable composition. Measurement of the yield
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22 2009 6 11 ： 1002－6673 （2009 ） 06－177－02 Development ＆ Innovation of Machinery ＆ Electrical Products Vol．22‚No．6 · Nov．‚2009 · DSP ， （ ， 255300 ） ， ， ， 。 ： DSP TMS320VC5416 ， ， ； ： A ： DSP ； FPS200 ； ： TP47 doi:10.3969/j.issn.1002-6673.2009.06.071 0 ， ， ， ； 。 DSP ， ， 1 TMS320VC5416 （ 、 ， C5416） FPS200 。 2 FPS200 。 （ ， ） ， ， 。 。 1 ， 。 。 ， 。 。 、 ， ， FPS200 FPS200 ， ， 2 CMOS ， ， 。 ， ， ， (DSP) 。 、 、 ， ， 。 ， ， ， ， ： 2009－08－28
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Flame Tests 12.01.2010 19.01.2010 Introduction The normal electron configuration of atoms or ions of an element is known as the “ground state”. In this most stable energy state‚ all electrons are in the lowest energy levels available. When atoms or ions in the ground state are heated to high temperatures‚ some electrons may absorb enough energy to allow them to “jump” to higher energy levels. The element is then said to be in the “excited state”. This excited configuration is unstable‚
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I. INTRODUCTION: In the analysis of inorganic substances‚ this branch involves the analysis of both metallic constituents as cations and non-metallic constituents as anions. In this experiment‚ you will analyze a known solution that contains the entire Group I cations—silver‚ lead‚ and mercury (I)—and an unknown solution to determine which ions are present and which are absent. II. DISCUSSION: The chlorides of Pb2+‚ Hg22+ and Ag+ are all insoluble in cold water. They can be removed as
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Lab 20: Flame Tests Purpose/Objective: The ground state is the normal electron configuration of atoms or ions in an element. When atoms or ions in ground state are heated to a higher temperature‚ some electrons absorb enough energy to move them to higher energy levels. This is known as the excited state. However‚ the excited configuration is unstable‚ and the electrons must return back to their positions in the lower energy level. As they return‚ the energy that was previously absorbed is now emitted
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Describe radioactive isotopes as a source of energy. eg. 235U * Describe the build-up of electrons in `shells` and understand the significance of the noble gas electronic structures and of valency electrons. * Understand that formation of ions implies gain or loss of valence electrons. 2. The Periodic Table. * Describe the Periodic Table as a method of classifying elements in groups and periods and its use to predict properties of elements. * Recognize different blocks in
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Identification of Metallic Ions Pre Lab Questions: 4pts 1. What are the learning goals of this experiment? To perform and observe the flame tests of some alkali and alkaline earth metal ion 2. Define ground state and excited state of an atom. Ground state- normal configuration of the electrons about the atom or the ion of an element; stable particle electrons are at lowest possible energy level Excited state- when stable particles are heated to very high temperatures some of the electrons leave
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Flame Test Laboratory Report Introduction The purpose of this lab is to observe and identify metallic ions‚ using flame tests. The traditional flame test originated when Robert Bunsen invented the Bunsen burner to test two new alkali metals he and his partner had discovered. “A flame test is an analytic procedure used in chemistry to detect the presence of certain elements‚ primarily metal ions‚ based on each element’s characteristic emission spectrum” (Flame Test 1). Using this test‚ an element
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one period all have the SAME NUMBER OF ELECTRON SHELLS. *Going ACROSS a period each element has ONE MORE PORTON and ONE MORE ELECTRON than the previous element. *Going ACROSS a period‚ the chemical properties of elements becomes LESS METALLIC AND MORE NON-METALLIC. ***GROUPS These are VERTICAL COLUMNS OF ELEMENTS .These are EIGHT groups numbered I to VII with the final group 0. *Each element in a group has the SAME NUMBER OF ELECTRONS IN ITS OUTER SHELL- for elements in Groups I to VII‚
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