* Chemical Formulas and Reactions . . . Midterm Objectives: * To balance chemical equations. * To interpret chemical reactions. * To understand equilibrium reactions and the factors that can affect them. * Molecular Mass / Formula Mass * Is the sum of the atomic masses of all the atoms present in one molecule of that compound. Example: the molecular mass of sodium bromide‚ NaBr‚ is 103‚ which represents the sum of the atomic mass of sodium (23) plus that of bromide (80)
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CHEMISTRY TOPIC 11 CHEMICAL CALCULATIONS CHEMICAL CALCULATIONS INTRODUCTION The first part of this ‘Chemical Calculations’ topic will help us to work out QUANTITIES involved in a reaction; For example‚ a manufacturer might want to know‚ How much ammonia will I produce from 20 tonnes of nitrogen in the Haber Process? To do these calculations you will need to be familiar with the term Ar (relative atomic mass)‚ Mr‚ Molar mass and Mole. Relative Atomic
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Chemicals in medicines Rakesh Mohan Hallen The words medicine’ and ’drug’ are often used in our country to mean the same substances: any substance‚ manufactured artificially‚ which can help recovery from sickness‚ relieve symptoms or modify a natural process in the body. A medicine is often a mixture of several chemical compounds. Even if it has only one active component compound often other substances are used as fillers or binders to give it bulk. Chemistry‚ the science related to chemical substances
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levels on the reef are too great to be repaired naturally. This example of chemical bleaching should be noted in history as a reason for retiring the practice of using man made chemicals on reefs to promote their
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Chemical Bonding Lab Chemical compounds are combinations of atoms held together by chemical bonds. These chemical bonds are of two basic types—ionic and covalent. Ionic bonds result when one or more electrons from one atom or group of atoms is transferred to another atom. Positive and negative ions are created through the transfer. In covalent compounds no electrons are transferred; instead electrons are shared by the bonded atoms. The physical properties of a substance‚ such as melting point
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Soren Chemicals 1. What is the addressable market size for Coracle? Is the first year goal of $1.5 million sales reasonable? (10 points) 2. Why is Soren struggling to sell Coracle? (10 points) 3. What is the highest price Soren can set for Coracle? (7 points) 4. What action plan do you recommend for Coracle? (13 points) Q1. Coracle is one of the clarifiers developed and produced by Soren Chemicals targeting residential pools which have smaller size than commercial pools and water
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DASMARIÑAS CITY COLLEGE OF SCIENCE AND COMPUTER STUDIES PHYSICAL SCIENCE DEPARTMENT GENERAL CHEMISTRY I LABORATORY (CHEM210L) S.Y 2013-2014 SCIENTIFIC PAPER CHEMICAL PERIODICITY MARIE JOE A. ALTERADO JUNE 31‚ 2013 CPE32 AUGUST 7‚ 2013 GROUP NO. 1 ENGR. IMELDA C. GALERA ABSTRACT The chemical periodicity was demonstrated by using different samples of Group IA‚ IIA and IVA elements. Each of the samples was placed in a test tubes and the physical state
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Corporate Finance: The Core (Berk/DeMarzo) Chapter 3 - Arbitrage and Financial Decision Making 7) You have an investment opportunity in Germany that requires an investment of $250‚000 today and will produce a cash flow of €208‚650 in one year with no risk. Suppose the risk-free rate of interest in Germany is 6% and the current competitive exchange rate is €0.78 to $1.00. What is the NPV of this project? Would you take the project? A) NPV = 0; No B) NPV = 2‚358; No C)
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proceed to discuss the characteristics and services provided by her chosen chemical dependency program. It is her belief that a substance abuser and/or addict is more likely to succeed at living a life free of alcohol and drugs when they continually attend a 12-step program‚ follow the steps‚ have a sponsor‚ a support group and educate themselves on how to live life without turning to alcohol or drugs. Of the several chemical dependency programs available‚ she chose to conduct a telephone interview
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Experiment 3: Chemical Equilibrium Purpose The purpose of this experiment was to determine the equilibrium constant for the formation of FeSCN2+. Introduction Chemical equilibrium is the point in a reversible reaction where the concentration of the reactants and that of the products remains constant. This point of equilibrium is referred to as the Kc value‚ which can be obtained using the formula: Kc = [product] [reactant] In this experiment‚ we used a spectrophometer to
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