Chemical Bonding and Molecular Structure 53 I. Structure of Matter (20%) B. Chemical bonding 1. Binding forces a. Types: ionic‚ covalent‚ metallic‚ hydrogen bonding‚ van der Waals (including London dispersion forces) c. Polarity of bonds‚ electronegativities 2. Molecular models a. Lewis structures TYPES OF CHEMICAL BONDING Ionic Bonding - two atoms of opposite charge electrically attracted to one another Covalent Bonding - two atoms each sharing electrons within a molecular orbital Metallic Bonding
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Kinetic Expressions (Kinetics) has been taking place at Berea College for 20 years. This year the team celebrated its 20th by revisiting a choreography that was performed at the first Kinetics and were very purposeful of who they allowed to choreograph in this production. This will be a critique of some of the dances performed; it will go into detail about each dance‚ analyze the movements and reveal the message. The opening act to Kinetics this year was the choreography that was performed at
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Kinetic energy is increasing between letters A-B‚ C-D and E-F. Based off the observations‚ in phase A-B Tert-Butyl Alcohol stays a solid‚ in phase C-D Tert-Butyl Alcohol stays a liquid‚ and in phase E-F the chemical stays a gas. This is observed at the particle level because temperature is a measure of Ek; the temperature is increasing which increases kinetic energy. Since Ek is the energy of motion‚ the particles would increase their velocity and the number and force of collisions. However‚ the
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Title: Kinetics: The Rate of a Chemical Reaction Objectives: 1. To study the kinetics of chemical reaction‚ 2 I- + S2 O82- I2 + 2 SO42- . 2. To study the effects of reactant concentration (persulphate‚ S2O82-‚ and iodide‚ I-) and temperature on the rate of chemical reactions. ( i) Study the effect of 0.20M (S2O82-) on the rate of chemical reaction. ( ii) Study the effect of 0.10M (S2O82-) on the rate of chemical reaction. ( iii) Study the effect
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Enzyme Kinetics Examples and Problems 1. An enzyme is produced for producing a sun protection lotion. Given kinetic data for the enzyme reaction with Vm=2.5 mmol/m3.s‚ Km=8.9 mM and So=12mM‚ what would be the time required for 95% conversion in a batch reactor? 2. An enzyme was assayed at an initial substrate concentration of 10-5M. The Km’ for the substrate is 2x10-3M. At the end of 1 min‚ 2% of the substrate had been converted to product. a. What % of the substrate will be converted
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Mommsenstrasse 13‚ 01062 Dresden‚ a Germany thomas.strassner@chemie.tu-dresden.de Received November 12‚ 2009 The mechanism and regioselectivity of the osmium-catalyzed aminohydroxylation of olefins was investigated in detail by density functional theory (B3LYP/6-31G(d)) calculations in the gas phase and with the CPCM-solvent model. A systematic variation of the catalyst system (OsO4 and various nitrogen sources) and the substrate’s electronic situation was conducted. Activation barriers could be
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Learning difficulties‚ cultural pressure and access to resources can all contribute to learner’s boundaries; however access to the course should be open to all regardless of race‚ age‚ religion‚ disability‚ gender or special needs. Issues arise wherever any of above situations is not taken into consideration. Inclusion of all or most of the issues in the enrolment form helps to eliminate the barriers and gives better prospect of learners attending the course. Information like whether student needs
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acting on it times its velocity 2. Which of the following is the correct description of momentum? a. The product of force and time c. The change in velocity per unit time b. The product of force and distance d. The product of mass and velocity 3. Which has more momentum‚ a large truck moving at 30 km/h or a small truck moving at 30 km/h? a. large truck b. small truck c. Both have the same momentum. 4. Which of the following has momentum? a. A rock on top of a cliff c. A parked car b
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Assignment: Theorist postulates that genetics and the environment are significant influences on intelligence. Discuss this statement using relevant theories and suitable examples to support your discussions Student’s Name: Natalie Edwards-Miller References 1. Bradfield‚ P.‚ and Potter‚ S. (2004). Longman biology for CXC. Kingston‚ Ja: Carlong Publishers. 2. Leal‚ L. (2006). The essentials of psychology II. New Jersey‚ NJ: Research and Education Association. 3. Sdorow‚ L.M. (1993). Psychology
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This assignment discusses chemical kinetics by determining the rate and average value for rate constant based on experimental values given. The orders of the reactants can only be determined experimentally‚ so we must look at how the concentration of the reactants affect the instantaneous initial rate while holding the concentration of the other reactant constant. In this reaction‚ the overall reaction order for the rate law is third because the order for A is second and the order for B is first
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