Determination of Cations and Anions through Elimination and Confirmation Tests By: Symantha Resendiz Introduction A topic of great importance to all scientists is the identification of compounds‚ which is relevant in all aspects of their work in some way shape or form. Weather it may be determining what is causing sickness or what is polluting the air‚ it is very prevalent in the science world. In project 2‚ identification of cations and anions was preformed through a series of confirmation
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Handbook of Formulae and Physical Constants For The Use Of Students And Examination Candidates Duplication of this material for student in-class use or for examination purposes is permitted without written approval. Approved by the Interprovincial Power Engineering Curriculum Committee and the Provincial Chief Inspectors’ Association’s Committee for the standardization of Power Engineer’s Examinations n Canada. www.powerengineering.ca Printed July 2003 Table of Contents TOPIC PAGE
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Basic HDD Components Many types of HDDs are on the market‚ but nearly all share the same basic physical components. Some differences might exist in the implementation of these components (and in the quality of the materials used to make them)‚ but the operational characteristics of most drives are similar. The basic components of a typical HDD are as follows (see Figure 9.9): ■ Disk platters ■ Read/write heads ■ Head actuator mechanism ■ Spindle motor (inside platter hub) Chapter 9 ■ Logic
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3.13 Test for Saponin glycosides 2g of dried plant powder add 5ml of distill water shake vigorously. Persistent of foam indicate the presence of saponin glycosides. 3.14 Test for Steroids (Salkowski’s test) 5ml of test solution add with 2ml of Chloroform and then Conc. H2SO4 sides of the test tubes. The appearance of color at the interface indicates the presence of steroids. 3.15 Experimental Procedure for preliminary Phytochemical studies (Brindha et al.‚ 1981) S. No Name of the Test
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(Al2O3). This is found as corundum‚ a crystalline. Aluminium can also occur as cryolite (Na3AlF6). Traces of other metal oxides in Aluminium oxide tint it to make it form stones (often precious) for example: chronium gives a red colour to rubies‚ and cobalt makes the blue in sapphires. How Aluminium deposits are formed Aluminium (like many other metals) is not found in it’s pure form‚ but associated with other elements in rocks and minerals. An aluminosilicate such as felspar (KAlSi3O8) is the main
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trade Vegetable oils Palm kernels Peanuts Influence of Colonialism: Economic impact was significant and varied Affection production‚ distribution‚ consumption - European factories wanted agricultural crops and minerals Copper‚ diamond‚ gold‚ cobalt‚ manganese Forced labor was not uncommon “assisted” - Also affected infrastructure New distribution system Roads and railroads ** Colonialism did not originate to assist African countries to develop economically originated to benefit European
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Solenoids Permanent Magnet- Magnetic Field. http://www.diracdelta.co.uk/science/source/m/a/magnetic%20field/source.html Magnets have two poles called North and South. Similar (like) magnetic poles repel. Unlike magnetic poles attract. A magnet attracts a piece of iron. The most important of the two properties of attraction and repulsion is repulsion. The only way to tell if an object is magnetised is to see if it repels another magnetised object. The strength and direction of a magnetic field
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Allergies are abnormal reactions of the immune system that occur in response to otherwise harmless substances. Micronutrients are essential elements that are needed only in small quantities for example; zinc‚ copper‚ selenium‚ iodine‚ magnesium‚ iron‚ cobalt‚ and chromium. Macronutrients are the main nutrients that provide the body with energy and help growth. They include carbohydrates‚ protein and fats. Background information Eating a healthy‚ balanced diet is very important for maintaining health
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substances‚ such as lime‚ are added to rebuild the weakened network and make the glass more stable. Glass is coloured by adding metallic oxide powders or finely divided metals while it is in a molten state. Copper oxides produce green or bluish green‚ cobalt makes deep blue‚ and gold produces wine red and violet glass. Much modern red glass is produced using copper‚ which is less expensive than gold and gives a brighter‚ more vermilion shade of red. The art of writing is one of the most
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ventral nerve cord. Since it was possible that extreme temperature changes could damage the ventral nerve cord‚ only one treatment was done on one cockroach (N=4). A constant triggered puff of air was used as the stimulus when collecting the data. A cobalt backfill showed no clear morphological differences among the nerve cords of different temperature treatments. It was demonstrated that there was a significant linear relationship between the frequency of action potentials and the temperature of the
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