first discovered in England during the year 1808 by Sir Humphry Davy. He was able to separate calcium into a pure metal by doing an electrolysis process on a mixture of lime HgO‚ which is mercuric oxide. However‚ Sir Humphry Davy was not able to do this until after he found out Berzelius and Pontin electrolysed lime into mercury which constructed calcium amalgam. Although he discovered calcium in 1808‚ calcium metal was not available in large amounts until the beginning of the twentieth century. Before
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HOUSEHOLDS PRODUCTS (INDIA) LIMITED (D) Indore (in % of all toilet soap buyers) Total Penetration Total Buyers New Buyers Repeat Buyers Repeat Rate% 7.1 7.06 7.1 10 5.48 2.9 2.58 36.34 15.3 8.59 5.3 3.29 32.90 16.9 5.18 1.6 3.58 23.40 17.4 3.8 0.5 3.3 19.53 17.4 1.73 0 1.73 9.94 17.8 1.97 0.4 1.57 9.02 18.1 2.11 0.3 1.81 10.17 The above table depicts that the following characteristics in the 2 cities Hyderabad: a) Low penetration
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distribution of income. Between 1920 and 1929‚ the salary of the wealthiest 1% rose by 75%‚ while only a 9% increase as a whole. Over 75% of families earned less than $2500 a year. Even families making twice that much cannot afford to buy many new products. Problems in the stock
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EFFECT OF INTEREST RATE ON INVESTMENT DETERMINATION IN NIGERIA (1970-2008) ABSTRACT This study examines the effect of interest rate on investment determination in Nigeria. The study is necessitated by the fact that the behavior of interest rates to a large extent determines investment activities and economic growth of any country. Investment decision is seen as demand for credit in an economy and this study calculated the annual variance of interest rate and its effects on investment determination
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Ionic Bonds Essay The periodic table is a masterpiece of organized chemical information. It is a table of the chemical elements in which the elements are arranged by order of atomic number. The standard form of the table includes periods (horizontal rows in the periodic table) and groups (vertical rows in the periodic table). Atoms are the basic building blocks of ordinary matter. Atoms are made up of particles called protons‚ electrons‚ and neutrons. Protons carry a positive electrical charge‚
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EXPERIMENT 2 ACID DISSOCIATION CONSTANT OF AN INDICATOR DYE OBJECTIVES Using spectrophotometric method: determine the wavelengths at which the acid and base forms of the dye in aqueous medium exhibit maximum absorption; determine the molar absorptivities of the acid and base forms of the dye and estimate an unknown concentration of the dye in solution using the Beer-Lambert’s Law; and determine the acid dissociation constant of the indicator dye. THEORY The absorption or reflection of
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Investigating the solubility of Group II hydroxides Jiyeon Kim Aim: To investigate the solubility of Group II hydroxides (Mg(OH)2‚ Ca(OH)2‚ Sr(OH)2‚ Ba(OH)2) Research Question: What is the trend of solubility of Group II hydroxides going down the group as determined through measuring the volume of hydroxides needed to titrate with a known concentration of hydrochloric acid? Background Information: Solubility is when a solute forms a homogeneous solution by dissolving in solvent. The solubility of any
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Calcium is essential to health yet it holds a hidden danger that brings us to our graves much quicker then we would like. Calcium is the most promoted nutrient by proponents of conventional‚ nutritional‚ and alternative medicine. This is a great and tragic mistake. They should have been promoting magnesium. Magnesium deficiency leads to an increase in myocardial levels of both sodium and calcium. This is a problem because Coronary Artery calcium is a predictor of near-term coronary heart disease
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Effect of Sucrose Solution on Osmosis Aim: The aim of the experiment is to show how varying the concentration of sucrose solution affects osmosis by changing different molar solutions of sucrose and water and how it affects the potato. Introduction: In this investigation I will be exploring the effect of varying concentration of sucrose sugar solution on the amount of activity between the solution and the potatoes. Osmosis is the movement of water molecules across a partially
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September 14‚ 2012 Spectrophotometric Determination of Iron in Aqueous Solutions as a Complex of 1‚10-Phenanthroline Introduction From the previous classical method of concentration determination of an unknown sample‚ this experiment now deals with the instrumental one. Unknown concentrations of iron in solutions were determined by measuring their corresponding absorbances through spectrophotometry. A spectrophotometer measures the amount of light that a solution absorbs. This is done by bombarding
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