Experiment 10: Solubility Product for Calcium Hydroxide GOAL AND OVERVIEW A saturated solution of Ca(OH)2 will be made by reacting calcium metal with water‚ then filtering off the solids: Ca(s) + H2O → Ca(OH)2(s) Ca2+(aq) + 2OH-(aq) The concentration of dissolved hydroxide will be determined by acid-base titration with standardized HCl solution. The Ksp for Ca(OH)2 will be calculated from the experimentally determined saturation concentration of hydroxide. Objectives of the data analysis understand
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Part Ca)Up until the 1940’s rubber had only been obtained from the latex of rubber trees(Hevea brasiliensis) in plantations situated in tropical areas such as Malaya and Burma. The demand for rubber increased significantly during world war 2 as rubber was needed for tyres of military vehicles and the supply was interrupted by the conflict between the countries. Scientists in Germany and the US developed synthetic polymers that could replace rubber. Even after the war ended the traditional sources
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reason why hydrogen is called a clean fuel. (1) AQA‚ 2008 2 Use a periodic table to help you to answer this question. Oxygen is in Group 6 of the periodic table. a i How many protons are in an atom of oxygen? (1) ii How many electrons are in an atom of oxygen? (1) b Chlorine is in Group 7 of the periodic table. Complete the electronic
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Weight of ampicillin sodium (mg) What weight (in mg) of ampicillin sodium (C16H18N3NaO4S) will provide 144 mg of ampicillin base (C16H19N3O4S)? 27. Weight of potassium permanganate (g) Potassium permanganate is normally made as a concentrated solution which is then diluted prior to
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instructed to randomly choose questions from a question pool to ask the interviewee and rate each response on a scale from 1 to 10. The variety of questions covered generic and typical questions that are universally asked at job interviews. These questions were worded in ways to identify the interviewees’ skills‚ strengths‚ weaknesses‚ communication‚ and inter-personal abilities. After the questioning segment‚ both participants were instructed to answer post-interview questions regarding the performance
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MECHANISM OF AQUEOUS HUMOR FORMATION There is a constant flow of aqueous humor through the anterior segment of the eye. The aqueous is formed by the ciliary process and flows from the posterior chamber to anterior chamber through the pupil and exits the eye at the angle. The secretion of aqueous humor generates the intraocular pressure required for an optically efficient globe. The flow of aqueous provides nutrition for the avascular ocular tissues that it bathes‚ the posterior surface of the
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I. Title: Iron-Copper (II) Chloride Reaction II. Purpose: The purpose of this lab is to see how iron reacts with a copper (II) chloride solution. III. Equipment and Reagents Scoop copper (II) chloride (CuCl2) Beaker Iron (Fe) Wash Bottle water (H2O) Scale Hydrogen chloride (M HCl) Filter Paper IV. Procedure: 1. Obtain a clean‚ dry 250 mL beaker. 2. See teacher to obtain a scoop of CuCl2 in the beaker. 3. Add approximately 50 mL of tap water to
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cropping Singeing Desizing Scouring Souring Bleaching (Optional) Mercerizing Dyeing Printing Washing Drying Finishing (Cotton/Flax) (Alkali) (Acid) General theory of dyeing Dyeing is the process of coloring textile material by immersing them in on aqueous solution of dye which is called dye liquor to improve the off effectiveness of dyeing heat is applied in to the dye liquor the generally theory of dyeing explain the interaction among dye fabric and water. It explains: 1. Force of repulsion 2. Force
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Kyara Santos Lab Questions: 1.Describe some of the influence of Latin music in the US in the early part of the twentieth century.Latin music started a new type of music‚ Jazz and Afro-Cuban Jazz. 2.What was the significance of "Machito and His Afro-Cubans"? “Machito and His Afro-Cubans” created Afro-Cuban Jazz. 3.How did Dizzy Gillespie incorporate Latin music into his music? Gillespie invited a player named Chano‚ who was from Cuba‚ and they worked together. 4.What was
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Sodium chloride‚ also known as salt‚ common salt‚ table salt‚ or halite‚ is an ionic compound with the formula NaCl. Sodium chloride is the salt most responsible for the salinity of the ocean and of the extracellular fluid of many multicellular organisms. As the major ingredient in edible salt‚ it is commonly used as a condiment and food preservative. [edit] Properties Thermal conductivity of pure NaCl as a function of temperature has a maximum of 2.03 W/(cm K) at 8 K and decreases to 0.069 at 314
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