produces corresponding calcium salts with liberation of CO2: CaCO3 + 2HNO3 Ca(NO3)2 + H2O + CO2(g) In this experiment‚ the mineral acid is added in excess to the calcium carbonate and the excess titrated against standard sodium hydroxide. This kind of titration is termed back titration. In this procedure‚ the analyte is consumed using excess titrant and the end
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Sodium is a metal from group 1 of the periodic table‚ this is a metal which reacts when it needs to‚ this metal has a low melting and boiling point‚ also it is very dense‚ this shows that when reacting with other substances it will be different and this is because it will not react the same the whole time. The other thing is that this elements electron configuration is 11 which is quite low when comparing them to the other elements in the periodic table. However this metal is more reactive than
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Post is a governmental owned postal service operation. It is responsible for all Australia’s world wide delivery as part of its community service obligation. Post Master General Department was established in 1901 on the federation of Australia as part of Australia’s government. In the later years‚ Post Master General Department (PMG) was separated into two different sectors which consist of the Australian Telecommunications Commission which is to handle the telecommunication sectors and also Australian
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28‚ 2013 Chemistry 36100 Introduction The purpose of this lab was to produce benzoic acid by mixing sodium benzoate with hydrochloric acid. The Hydrochloric acid used in the experiment was a stock solution made by mixing HCl Acid and deionized water. HCl acid‚ historically called‚ muriatic acid or spirits of salt‚ hydrochloric acid is produced from sulfuric acid and common salt‚ NaCl (Princeton.edu). Since the early 1900 ’s‚ sodium benzoate has been used as a food preservative (SolarNavigator)
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GENERAL AND POST ORDERS Instruction: General orders for security guard provide directions and instructions of general application of the job. Each security guard is responsible for being fully familiar with and responsive to the general orders. These orders will not be modified or revised without the written authority of Human Resources Department. 1. Manner of Performance of Duty and Uniform 1. Security personnel will be firm yet courteous‚ efficient and tactful at all times
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Lab #5: Refraction of Light Theory: Refraction can be defined as the bending of a wave when it enters a medium which causes it to have some reduced speed. In terms of light‚ refraction occurs when the ray passes through some medium which slows its speed; such as water or glass. In this instance the ray tends to bend towards the normal of the medium. The amount of bending or refraction which occurs can be calculated using Snell’s Law (). Objective: To measure the index of refraction of Lucite
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allowed : 3 hours General Instructions: (i) All questions are compulsory. Maximum Marks : 70 (ii) Marks for each question are indicated against it. (iii) Question numbers 1 to 8 are very short-answer questions and carry 1 mark each. (iv) Question numbers 9 to 18 are short-answer questions and carry 2 marks each. (v) Question numbers 19 to 27 are also short-answer questions and carry 3 marks each. (vi) Question numbers 28 to 30 are long-answer questions and carry 5 marks each. (vii) Use Log Tables
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The Huffington Post Abstract This paper discusses the growing success of The Huffington Post. The online publisher has become a prominent online news source over the years and this paper examines the success‚ while relating The Huffington Post’s strategy to common marketing analysis tools such as the Porter Five Force Analysis‚ as well as discussing four different revenue models for online publishers.
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Post-Colonialism: Definition‚ Development and Examples from India 1. Post-colonialism in general 1.1 Definition Post-colonialism is an intellectual direction (sometimes also called an “era” or the “post-colonial theory”) that exists since around the middle of the 20th century. It developed from and mainly refers to the time after colonialism. The post-colonial direction was created as colonial countries became independent. Nowadays‚ aspects of post-colonialism can be found not only in sciences
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Post Structuralism And Deconstruction . · without a fixed point of reference against which to measure movement we cannot tell whether or not you are moving at all. · · Post Structuralism accuse of not following through the omplications of the views about language on which their intellectual system is based. · Post structuralism says‚ in effect‚ that fixed intellectual reference points are pemanently removed by properly taking on board what structuralists said about language. · We could
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