Formulas Chapter: 1 Section: 2 * The empirical formula: the formula that gives the simplest ratio of the number of atoms in the compound. Determination of the empirical formula: 1. Find the mass in grams of each element. 2. Find the number of moles. 3. Find the simplest ratio of moles. Question 1. Mass of elements in g. 2. Number of moles of each element. 3. Simple ratio of elements. Practice problems * A 2.765 g sample of lead oxide was heated in a stream
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Chemistry 121 Colligative Properties Lab Demonstration of Selected Calculations from Choice I Determination of Kf for Naphthalene To determine the Kf for naphthalene‚ we need to find the difference in the freezing point of pure naphthalene and the solution of 1‚4-dichlorobenzene in naphthalene. Let’s say that we did this experiment‚ used 1.00 g 1‚4-dichlorobenzene in 10.00 g naphthalene‚ and found that the freezing temperature of pure naphthalene was 78.2°C‚ while that of the solution was 75
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The purpose of this lab was to see which solutions are soluble and which are not. We were able to see this by mixing certain solutions together and observing changes that occurred. The procedure for this experiment included a few different steps. The first steps were to add the nitrate solutions into the lettered parts of the 96-well plate. Once you were done with that‚ you were supposed to add the sodium solutions to the numbered parts of the 96-well plate‚ so that the solutions were added together
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Artist Statement Acrylic. Guache. Ink. Textured Paper. Text. These are some words that make up the magnitude of some of my pieces. An entire two years were spent exploring one theme‚ faces in relation to text and vice-versa. Inspired by Amedeo Modigliani and Francoise Neilly‚ I have created a theme that I believe is unique. Colours‚ Backgrounds and Features are a few of the elements from the works of the artists that have inspired me‚ which I incorporated into my work. But beyond this‚ I chose
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MACROECONOMIC POLICIES THERE ARE TWO TYPES OF MACROECONOMIC POLICIES. FISCAL POLICIES & MONETARY POLICIES THESE POLICIES CAN BE FURTHER DIVIDED INTO TWO SEPERATE POLICIES FISCAL POLICIES CONSIST OF DEFLATIONARY FISCAL POLICY AND REINFLATIONARY/REXPANSIONARY FISCAL POLICY MONETARY POLICIES CONSIST OF TIGHT MONETARY POLICY AND LOOSE MONETARY POLICY DEFLATIONARY FISCAL POLICIES AND TIGHT MONETARY POLICIES WILL OFTEN BE USED IN CONJUCTURE DURING TIMES IN WHICH INFLATION IS ON THE RISE
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International Baccalaureate Program Economics Commentary 1 In this assignment I will investigate an article from the point of view of an economist. Furthermore I will explain the linkages between concepts and theories of microeconomics and the article. Purpose of this commentary is to present my economic insight into the implications of the article. Basic economic concepts such as demand‚ supply and surplus can be applied to markets to help understand and solve problems
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M10/5/MATHL/HP2/ENG/TZ1/XX 22107204 mathematics higher level PaPer 2 Thursday 6 May 2010 (morning) 2 hours iNsTrucTioNs To cANdidATEs Write your session number in the boxes above. not open this examination paper until instructed to do so. do graphic display calculator is required for this paper. A section A: answer all of section A in the spaces provided. section B: answer all of section B on the answer sheets provided. Write your session number on each answer sheet‚ and attach
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Topic 1- Exam Style Notes 1.1 Nature of Business Activity What is a business? * Business- decision making organisation using inputs to produce goods and services which satisfy the needs and wants of a customer * Factors of production- “CELL” 1. Capital- used to produce goods (non natural‚ eg machinery) 2. Enterprise- management/planning of factors of production 3. Land- natural resources; renewable and non renewable 4. Labour- physical and mental efforts of people
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14. Analyze the causes of the Great Depression in one country in the Americas I. Thesis: In the United States during the 1920’s the economy for the most part was alive and well‚ which gave it the name “The Roaring Twenties”‚ but it would not last forever. There were many different factors that led to the Great Depression in America but the main factor that caused it all was the Stock Market Crash in October of 1929. From this one event banks failed and people lost jobs. II. Stock Market Crash:
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to observe a shift in equilibrium concentrations associated with changes in temperature 4. to explain the observations obtained by applying Le Chatelier’s principle Materials Required: See page 209 Heath Chemistry Laboratory Experiments Procedure: See pages 209-211 Heath Chemistry Laboratory Experiments Data and Observations: Table 1 Equilibrium Involving Thymol Blue REAGENT ADDED STRESS (ION ADDED) COLOR OBSERVATION DIRECTION OF EQUILIBRIUM SHIFT HCl (Step
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