technique‚ are equal to 66 and 110 Â 10À30 cm5 esuÀ1 ‚ respectively. Beside a geometric effect (pseudo-Td symmetry)‚ the coordination of the metal center provides an intrinsic enhancement of the NLO response. In addition‚ an enhancement of the thermal stability of about 60° is found upon metal complexation. Ó 2004 Elsevier B.V. All rights reserved. Keywords: Schiff bases complexes; Nonlinear optics; EFISH; Semi-empirical calculations; X-ray diffraction 1. Introduction Molecular materials with quadratic
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N09/4/CHEMI/HPM/ENG/TZ0/XX+ 88096101 CHEMISTRY HIgHER lEvEl PaPER 1 Tuesday 3 November 2009 (afternoon) 1 hour INSTRUCTIONS TO CANDIDATES • Do not open this examination paper until instructed to do so. • Answer all the questions. • For each question‚ choose the answer you consider to be the best and indicate your choice on the answer sheet provided. • The periodic table is provided for reference on page 2 of this examination paper. 8809-6101 16 pages © International Baccalaureate
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Metallobiomolecules METALLOBIOMOLECULES CONTENTS 1. Introduction Metallobiomolecules 2. Classification Metallobiomolecules 2.1. Transport and of to Storage Proteins 2.2. Oxygen binding Today scientists try to explore the chemistry basis behind the biological processes. As a result of this‚ new areas have evolved such as bioinorganic chemistry and bioorganic chemistry. In this section we will talk about an important concept in bioinorganic chemistry called “Metallobiomolecules”. Metallobiomolecules
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9 Oxidation and reduction A complete set of fully worked solutions is contained in the Chemistry for WA 2 Solutions Manual. Review Exercise 9.1 1 a Redox reaction b Not a redox reaction c Redox reaction d Redox reaction 2 a Oxidation: Fe(s) Fe2+(aq) + 2e– Reduction: Ag+(aq) + e– Ag(s) Overall equation: Fe(s) + 2Ag+(aq) Fe2+(aq) + 2Ag(s) b Oxidation: Mg(s) Mg2+(aq) + 2e– Reduction: Cu2+(aq) + 2e– Cu(s) Overall equation: Mg(s) + Cu2+(aq) Mg2+(aq) + Cu(s) c No reaction.
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THE MAIN STAGES IN THE PROCEDURE OF CONTRACTING A CUSTOMARY LAW MARRIAGE AND A STATUTORY LAW MARRIAGE IN ZAMBIA. AUTHOR: KATALILO JOY INTRODUCTION This paper is aimed at stating and comparing the stages involved in the procedure of contracting a customary law marriage and that of a statutory marriage in Zambia. Marriage in Zambia‚ like most African countries‚ is governed by two laws. These are customary law and statutory law. Customary law is basically
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the time the test is distributed. Exam Date:_________________________________ There are 12 specific topics covered on the test. In addition to these you will be required to demonstrate math and graphing skills. The 12 topics covered are: The Atom Moles and Stoichiometry Nuclear Chemistry Solutions Bonding Kinetics and Equilibrium Matter Acids‚ Bases and Salts Energy Oxidation-Reduction (Redox) The Periodic Table Organic Chemistry What is the point of this packet? This review
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Organic Chemistry Basic Ideas: Carbon chains: Straight chains and branched chains‚ Numbering of chains and branches. Carbon Rings: Cyclic Molecules‚ Aromatic Compounds Types of Organic reactions: Combustion Addition Substitution Condensation Oxidation What is organic chemistry? Carbon compounds. Methane CH4 Hexane C6 H14 Ethane C2H 6 Heptane C7 H16 Propane C3H 8 Octane C8 H18 Butane C4H10 Nonane C9H20 Pentane C 5 H12 Decane C1 0 H22 Alkanes: Saturated Hydrocarbons
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Match each item with the correct statement below. a. halide ion e. valence electron b. octet rule f. coordination number c. ionic bond g. metallic bond d. electron dot structure ____ 1. an electron in the highest occupied energy level of an atom ____ 2. Atoms react so as to acquire the stable electron structure of a noble gas. ____ 3. a depiction of valence electrons around the symbol of an element ____ 4. an anion of chlorine or other halogen ____ 5. the force of attraction binding oppositely
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UNIT 1 – What is Biology? What is biology? the study of living organisms‚ divided into many specialized fields that cover their morphology‚ physiology‚ anatomy‚ behavior‚ origin‚ and distribution. Biotic vs. abiotic factors Biotic- living factors i.e. plants‚ animals‚ fungi‚ bacteria‚ and protest Abiotic- nonliving factors that affect living organisms. Environmental factors: habitat & weather 7 Characteristics of living things (Bio 3 Book Ch. 1) Uni-cellular vs. Multi-cellular Uni-Cellular-
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Solid Freeform Fabrication of Functionally Graded Materials Abstract: Functionally Graded Materials (FGMs) have a wide range of potential commercial applications which consist of components requiring wear-resistant surfaces such as engine components‚ rocket nozzle and so forth [1]. Solid freeform fabrication (SFF)‚ especially Freeze-form Extrusion Fabrication (FEF) technology‚ an economical method feasible for grading among many compatible plastic‚ ceramic and metal materials combinations
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