Worksheet - Acids‚ Bases and Salts 1. I am pure water. When heated my pH (increases‚ decreases)‚ because more of my water molecules dissociate. 2. I am a 0.020 M solution of weak acid‚ HA. If I only dissociate to the extent of 1.50%‚ what is the value of my Ka? 3. I am a 0.20 M solution of hydrocyanic acid‚ HCN‚ with a Ka of 4.93 x 10¯ 10 . What is my pH? 4. I am a buffer made from 0.10 M acetic acid and 0.15 M sodium acetate. If the Ka for acetic acid is 1.77 x 10¯ 5 ‚ what is my pH? 5. I am
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What is the care value base? The care value base is a range of standards for health and social care. It is designed to guide the practice of professionals working in this area. The aim of the standards is to improve clients’ quality of life‚ by ensuring that each person gets the care that is most appropriate for them as an individual. The care value base offers guidance‚ and sets standards‚ in three main areas of health and social care: ➢ Fostering equality and diversity ➢ Fostering people’s
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Anna Powell 2nd I.Title: Acid-Base Titrations AP Chemistry Laboratory #6 II.Purpose: The purpose of this experiment is to standardize a sodium hydroxide solution and use the standard solution to titrate an unknown solid acid. The equivalent mass of the solid acid will be determined from the volume of sodium hydroxide added at the equivalence point. The equilibrium constant‚ Ks‚ of the solid acid will be calculated from the titration curve obtained by plotting the pH of the solution versus
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Introduction 1 2. What is base 5 number 1 3. How to read a Multiplication TABLE 2 4. How to read an Addition TABLE 3 5. Process of multiplying two base 5 number 3 APPENDIX A: LIST OF FIGURES 6 APPENDIX B: REFERENCE PAGE 6 ii PREFACE Thanks the help of my professor Nancy Acemian and the students who contribute their ideas when I write this instruction. Wenjun zhu February 2008 iii 1. Introduction In reality‚ people use base 10 numbers quite often
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Acid-Base Titrations A Titration of Potassium Hydroxide Phthalate and Sodium Hydroxide Hanna Piper Department of Chemistry‚ SUNY College at Brockport‚ Brockport‚ NY 14420 Chemistry 205.06 Abstract Titrations are used to find the molarity of an unknown solution. A titration begins with an analyte and titrant being used to measure the unknown molarity of the analyte. In the following experiment‚ sodium hydroxide was used as the titrant and potassium hydroxide phthalate was used as the
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GOTTHARD BASE TUNNEL‚ SWITZERLAND 1. INTRODUCTION Currently under construction to stretch a record length of 57 km‚ the Gotthard Base tunnel located in Switzerland spans the north of Europe‚ spanning through the Swiss Alps to the south of Europe. This railway tunnel has been designed to bypass the inefficient route of windy roads and cutting down travel time. The Gotthard Base tunnel consisting of twin tunnels is connected by cross passages at every 325m. The twin tunnels have been constructed
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Five Bases of Power Maria Mayorga BCom230 November 28‚ 2011 Jay Johnson Five Bases of Power Power is said to be ability of one person‚ group‚ or organization to control another person‚ group‚ or organization. Power is also refer to when one individual makes another do what the other wished through fear‚ force‚ persuasion‚ or reward. For example someone may be powerful because he or she could fire or assign a task someone does not like. Other could be powerful by having the ability to
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Properties of Acids and Bases Diagram: A B C D E F Bromothymol Blue Universal Indicator Phenolphthalein Litmus Paper Analyze: 1) F‚ C‚ D‚ B‚ A‚ E 2) D is neutral because it turned to the colour of green when it came in contact with the indicator Bromothymol Blue. The acid or base is green between 6.0-7.6 pH. 3) Solution E is more alkaline (more basic) than solution A because when E came into contact with the indicator Bromothymol Blue it turned
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ECN3000 International Trade An “Emerging Market” Country India Final Report Instructor: Mr. Dominique A. G. Jordan Class: BBA 4 Group Members:- * Huang Hsiang Yu‚ Rachael * Ethan Wong Weng Keong * Mah Hui Khoon‚ Yvonne * Danaya Somnam Submission Date: 15 January 2011 Word Count: 7‚399 words Contents Executive Summary 1 Reason for Selection 2 Country Background 3 PESTLE Analysis 5 Political 5 Economical 7 Social 9 Technological 12 Legal
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Five bases of power Social psychologists John R. P. French and Bertram Raven‚ in a now-classic study (1959)‚ developed a schema of sources of power by which to analyse how power plays work (or fail to work) in a specific relationship. According to French and Raven‚ power must be distinguished from influence in the following way: power is that state of affairs which holds in a given relationship‚ A-B‚ such that a given influence attempt by A over B makes A’s desired change in B more likely. Conceived
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