CHEMISTRY DETERMINATION OF ENTHALPY CHANGE OF NEUTRALIZATION IA Criteria Assessed: DCP CE MS Introduction When an alkali neutralizes an acid‚ a salt and water are formed. Aqueous hydrogen ions (H+(aq)) from the acid react with the hydroxide ions (OH- (aq)) from alkali‚ forming water. The identity of salt will depend on the nature of the acid and alkali used. H+(aq) + OH- (aq) → H2O(L) The combination of H+ and OH- ions in this way releases energy. In this practical‚ the
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Experiment 5 Gravimetric Determination of Sulfate Eisman E. Morales TA: Jackeline Pennywiit Chemistry 121 02/14/2011 Purpose: To determine the percent sulfate in a sample using a semimicro scale gravimetric procedure. Procedure: Refer to pages 41-42 of General Chemistry volume 1 Laboratory Experiments by Judith Casey and Robert Tatz‚ Hayden McNeil Publishing‚ 2010 Report Sheet See attached report sheet. Report Questions 1. Explain how your calculated value for percent
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RULE VS PRINCIPLE BASED CONVERGENCE VS ADOPTION IFRS Assignment1‚ Group Section 1 Characteristic Additional Comment Criteria Disadvantage Advantage • Provide specific dictates for reporting financial information • Unavoidable. (Accountants must follow these rules or face penalties for noncompliance. ) • Effective rules-based standards require active participation of the financial reporting community to evaluate the resulting quality. Real life practice issues should be
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Recrystallization of Pure Phthalic Acid‚ Benzoic Acid and Napthalene Introduction Recrystallization is a important method in purifying organic compounds which are solid. It is an effective method that is important to be familiar with that is essential in the industrial chemical world. This experiment will allow students to be familiarized with the technique of recrystallization by working with phtalic acid‚ benzoic acid and naphthalene from appropriate organic solvents. Experimental Method 1. Gather 200mg
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Experiment 4 Spectroscopic study of Cu(II) Complexes: Crystal Field Theory Objective: To study the effect of ligands on crystal field splitting energy ( E) Theory The color of coordination compounds of the transition elements is one of their characteristic properties. These colors are due to the absorption and subsequent emission of light in the visible part of the spectrum. Light in this region of the spectrum caused promotion of d–electrons from a lower to a higher energy level. The
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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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Key Performance Indicators (KPIs) Key Performance Indicators (KPIs) are quantitative and qualitative measures used to review an organization’s progress against its goals. These are broken down and set as targets for achievement by departments and individuals. The achievement of these targets is reviewed at regular intervals. KPIs are used to monitor the performance of a company‚ department‚ process or even an individual machine. They will also help shape the behaviors of employees within the company
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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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and leftovers is a way of counting that same quantity. Counting plays a role in constructing base-ten ideas about quantity. Each approach helps children think about the quantities in a different way. Counting by one‚ is a primary way they can name
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ETHERS Classification of Ethers: Symmetrical ethers – two groups attached to O are identical Ex. CH3CH2OCH2CH3 – diethyl ether Unsymmetrical ethers – two groups attached to O are not identical Ex. CH3CH2OCH3 – ethyl methyl ether Physical Properties of Ethers: Ethers have much lower boiling points compared to alcohols of comparable MWs. BPs of ethers increases with increasing MW. BPs of isomeric ethers increase with increasing alkyl chain length. BPs of ethers are about the
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