Molecule Polarity PhET Lab A study of electronegativity‚ bond polarity‚ and molecular polarity Introduction: In this atomic-level simulation‚ you will investigate how atoms’ electronegativity value affects the bonds they produce. When two atoms bond‚ a pair of electrons is shared between atoms. Electronegativity is a measure of a single atom’s ability to hoard electrons shared in that bond. In this lab you will work diligently‚ at your own pace‚ to answer a number of questions. To begin‚ from
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Collecting Butane Gas The purpose of the lab was to determine the molecular mass of Butane‚ and this was done by using the ideal gas law (PV=nRT). The materials used were: match‚ funnel‚ bucket‚ cylinder‚ thermometer‚ lighter‚ scale‚ and a wooden flynt. These materials are used to help collect and test the Butane gas. Butane gas was used because it is ideal at standard temperature and pressure. Procedure: 1. Rinse bucket and fill three fourths full. 2. Rinse all glassware. 3. Place
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3.2.1 ECG Calculations. After performing experiments with the help of doctors and cooperation of a subject a certain reading is to taken.[42-51] All the obtained reading are compared with the normal reading of a subjects and some references i.e Dr.Bllams and Dr.Johnsons quotsons. The ECG abnormalities are detected by measuring and comparing P-R‚ QRS and Q-T intervals with normal values. Below the table is a normal reading of a human. Variations of these readings represent variations in ECG. It
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Lab 9 Working with Printers Exercise 9.1 Installing a Printer Overview Contoso‚ Ltd. has just taken delivery of several new printers that the IT director purchased through an auction. He has assigned you the task of installing the printers and making them available to the users of the company network. For the first printer‚ you intend to connect the unit directly to an LPT port in the Windows 7 computer that will function as the print server. In Exercise 9.1‚ you install the driver for the printer
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characteristics of D1N4148 by SPICE simulation. 3.1. Simulate the power diode using DC sweep option 3.2. Vary the Vin from -10 V to 10 V with a step of 0.1 V and obtain the graph Vout vs Vin. 3. Repeat the experiment with its physical implementation (on breadboard) 4.3. Construct this circuit on breadboard 4.4. Vary the Vin from -10 to 10 with step of 1V and measure respective Vout for each of the voltages. Fill these values in a table 4.5. Plot the Vout vs Vin
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Titration CalculationsBefore you go any further‚ check that you can do the following… Calculate: Relative molecular masses from a given chemical formula Calculate: Number of Moles from the mass/RMM equation Manipulate: The number of moles equation to get the form you require. When you are confronted by a Titration calculation the first rule is: DON’T PANIC! The Second rule is read through the question very carefully.The Third rule is read through the question carefully again! We are now going to
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Lab 2: Infra-Red (IR) - Nuclear Magnetic Resonance (NMR) Exercises In Molecular Spectroscopy - Structural Determination Organic Chemistry II CHEM 2425 Manrique October 30‚ 2012 Alex Wolf Introduction For the purposes of this lab‚ the chemical formula will be given‚ and the degrees of unsaturation can be calculate from the formula (2C+2)-(H+Hal-N)/2. The degrees of unsaturation will give clues as to the structure. A double bond‚ as well as a ring will have one degree of unsaturation each
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Molecular modelling is the general term used to describe the use of computers to construct molecules and perform a variety of calculations on these molecules in order to predict their chemical characteristics and behaviour. The term molecular modelling is often used synonymously with the term computational chemistry. Computational chemistry is a broader term‚ referring to any use of computers to study chemical systems. Some chemists use the term computational quantum chemistry to refer to the use
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voltages. Introduction: The purpose for this experiment is to get familiar with basic properties and applications of the integrated-circuit operational amplifier‚ the op amp‚ one of the most versatile building blocks currently available to electronic-circuit designers. The emphasis will be primarily on the nearly ideal‚ on what is easily and conveniently done. Exploration of what is less-than-ideal about commercial operational amplifiers will be deferred to later experiments. For the procedure
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through share buybacks and strong dividends. About 43.8% of the total capital of the company comes from debt and the remaining comes from equity. The cost of the different components of its capital structure are – debt: 2.92% (after-tax cost)‚ and equity: 9.49%. The WACC is 6.61%‚ based on the capital structure outlined. The effective tax rate is 35.4%. AT&T has had dividend growth for the last 25 years. The dividend growth this year was 2.5% and the last year was 12.7%. Dividends declared totalled $1
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