Chemistry F332 Notes Ions in solids and solutions: Structure of an ionic lattice (Sodium Chloride): * Consists of sodium ions (Na+) surrounded by six chloride ions (Cl-) * Chloride ions also surrounded by six sodium ions. * Held together by attraction of oppositely charged ions. * Giant ionic lattice. * Electrostatic bonds hold lattices together. * Structure is simple cubic. * Some ionic crystals contain water. * Known as water of crystallisation. * These crystals
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Concentration of a Solution: Beer’s Law The objective of this experiment is to determine the concentration of an unknown copper sulfate solution. You will be using the Colorimeter. In this device‚ red light from the LED light source will pass through the solution and strike a photocell. A higher concentration of the coloured solution absorbs more light (and transmits less) than a solution of lower concentration. The Colorimeter monitors the light received by the photocell as either an absorbance
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SOLUTION AND CONCENTRATION A solution is a homogeneous mixture‚ made up of a solute dissolved in a solvent. Ex. In a water (aqueous) solution of sodium chloride‚ the sodium chloride is the solute and the water is the solvent. Solute – the component that is dissolved or is the least abundant component in the solution. Ex. Sugar‚ salt Solvent – the dissolving agent or the most abundant component in the solution. Ex. Water Common Types of Solution State of Solution State of Solute
Free Concentration
Rhian Pritchard Mrs. Moran CAIII Hour 7 4-17-2011 Making a Difference The business of fur trade and the harsh practices of this business have been global issues for many decades. They have ruthless ways of killing animals like mink‚ foxes‚ and especially wild yak. It is estimated that the population of the wild yak in Qinghai‚ China has dropped from one 1 million to 75‚000 in the past decade (Fang 38-39). This problem has been going on for too long and despite the laws and restrictions that
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problem 261 A steel rod with a cross-sectional area of 0.25 in2 is stretched between two fixed points. The tensile load at 70°F is 1200 lb. What will be the stress at 0°F? At what temperature will the stress be zero? Assume α = 6.5 × 10-6 in/(in·°F) and E = 29 × 106 psi. Solution 261 For the stress at 0°C: answer For the temperature that causes zero stress: answer problem 262 A steel rod is stretched between two rigid walls and carries a tensile load of 5000 N at 20°C. If the allowable
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Solution-Focused Therapy Solution–focused therapy (SFT)‚ unlike other forms of therapy argues that a person doesn’t have to understand any problem in order to resolve the problem and that the solution isn’t necessarily related to the problem. The purpose of this paper is to give a brief overview‚ description and rationale of Solution-focused therapy as well as an explanation of the therapeutic processes involved in SFT. This paper will also demonstrate through case example; systemic case conceptualization/hypotheses
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STUDENT SOLUTIONS MANUAL Jeffrey M. Wooldridge Introductory Econometrics: A Modern Approach‚ 4e CONTENTS Preface Chapter 1 Chapter 2 Chapter 3 Chapter 4 Chapter 5 Chapter 6 Chapter 7 Introduction The Simple Regression Model Multiple Regression Analysis: Estimation Multiple Regression Analysis: Inference Multiple Regression Analysis: OLS Asymptotics Multiple Regression Analysis: Further Issues Multiple Regression Analysis With Qualitative Information: Binary (or Dummy) Variables Heteroskedasticity
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Joscely Garris Professor Vinh Hoang CHEM 1151L – 254 25 October 2013 Preparation of Viscous Solution This report discusses an experiment to study the relationship of solute/solvent and the calculations involved to measure the concentration of the solution. The first experiment to take place is the preparation of a salad dressing using xanthan gum solution‚ water and oil. Commonly used as a food thickening agent‚ Xanthan gum is a large molecule composed of several saccharides linked together
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DATE: 09/11/06 RITE-SOLUTIONS: MAVERICKS UNLEASHING THE QUIET GENIUS OF EMPLOYEES We freely acknowledge that we are not the two smartest people in the company... . Weíve got a lot of real world experience. Weíve got a vision of where we want this thing to be at some point in time. But exactly how to get there‚ and what technologies to use‚ and how we should employ them‚ thatís much bigger than any two people should be responsible for. ó Jim Lavoie‚ CEO of Rite-Solutions‚ speaking of himself and
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TUTORIAL1 WITH INFORMATION TO SOLUTIONS 1. For most products‚ higher prices result in a decreased demand‚ whereas lower prices result in an increased demand. Let d = annual demand for a product in units p = price per unit Assume that firm accepts the following price-demand relationship as being realistic: d = 800 – 10p where p must be between $ 20 and $70. a. How many units can the firm sell at the $ 20 per-unit price? At the $ 70 per-unit price?
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