Calcium is an essential element for the growth and development of teeth and bones. Most of the Calcium is gained from cereals‚ fruits and vegetables‚ these foods are known to have around 10 mg of Calcium per 100 grams. A predominantly eminent intake in childhood Calcium is responsible for the bone mass in adults and it also affects the rate of bone growth. Lentils are a great source of naturally available Calcium. The regular intake of Calcium can reduce the risks of Osteoporosis‚ a disease where
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Megan Ly Chemistry 231L February 20‚ 2013 SOLUBILITY Purpose: To better comprehend solubility behavior by investigating the solubility of various substances in different solvents‚ looking at miscible and immiscible pairs of liquids‚ and observing the solubility of organic acids and bases. Reference: Pavia
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Synthesis of Salicylic Acid and Potentiometric Determination of its Purity and Dissociation Constant ------------------------------------------------- Abstract The purpose of the study is to synthesize salicylic acid from the ester‚ methyl salicylate‚ and determine the acid’s dissociation constant and purity. The ester was converted to salicylic acid by base hydrolysis. The products were refluxed and recrystallized‚ to ensure maximum purity‚ and filtered‚ dried‚ and weighed. The melting point
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! ! ! ! ! ! ! Determining the solubility of Sodium hydroxide ! ! ! ! ! ! ! ! ! ! ! ! Yunha Kim! Gyeonggi Suwon International School ! IB DP Chemistry SL! Research Question! How is the solubility of sodium hydroxide (NaOH) in water affected by temperature? ! ! Introduction ! Sodium hydroxide is categorised as metal halide salt‚ composed of sodium and chlorine.! The ions present in the solid crystals of potassium chloride dissolve and gain mobility in water
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! ! ! ! Determination of Gas Constant R through Mg and HCl Reaction ! ! ! ! ! !1 of !9 IB Chemistry SL (Jr) Candidate: Yunha Kim Objective ! Candidates will react Magnesium with Hydrochloric acid and collect Hydrogen. The grams of the produced Hydrogen will be calculated and compared to the theoretical yield of Hydrogen. ! Controlled Variables ! Mass of Magnesium Ribbon This will be kept constant as the objective is to determine the Gas Constant (R). If this
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Spectrophotometric Determination of the Equilibrium Constant of a Reaction DEPARTMENT OF MATERIALS‚ METALLURGICAL AND MINING ENGINEERING‚ COLLEGE OF ENGINEERING July 26‚ 2012 ------------------------------------------------- ABSTRACT ------------------------------------------------- Before proceeding to test the next solution‚ we must first clean the cuvette‚ using similar steps earlier. First‚ we rinse with water‚ then with the solution‚ and then we fill it up and test
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texts contain solubility rules and tables. Basic Solubility Rules: A. Nitrates: All nitrate salts are soluble. B. Alkali metals: The salts of lithium‚ sodium‚ potassium‚ rubidium‚ and cesium are generally very soluble. C. Ammonium salts: Almost all ammonium salts are soluble. D. Sulfates: The sulfates of most common elements are soluble‚ except those of calcium‚ strontium‚ barium‚ and lead (II) ions. © 2010 Hands On Labs‚ Inc. LabPaq CK-1 103 E. Hydroxides: Most of the hydroxides are insoluble
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Date Performed: September 9 ‚2011 SPECTROPHOTOMETRIC DETERMINATION OF THE ACID DISSOCIATION CONSTANT OF METHYL RED M.C. Caligagan ‚M.N.Q. Tolentino and M.Q. Clores Institute of Chemistry‚ College of Science University of the Philippines‚ Diliman‚ Quezon City‚ Philippines Received :September 21‚2011 ABSTRACT This experiment aims to determine the acid dissociation constant value of Methyl Red by means of spectrophotometry. Ten samples were spectrophotometrically analyzed under a UV-Vis
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general‚ solubility rules can be used to predict the outcome of double replacement reactions. I have come to this decision‚ because almost all of the data recorded from the lab‚ with the exception of number 13‚ agreed with the predictions made beforehand. 2. Out of the 15 combinations‚ the observations made for the combination of number 13 (the reaction of lead (II) nitrate and barium chloride)‚ did not agree with what was predicted‚ based on the solubility rules. The solubility rules that
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References: Buchanan‚ G.W. "Solubility Tests and Recrystallization." CHEM 2203/2204 Organic Chemistry Laboratory Manual. By C.A. White. N.p.: n.p.‚ n.d. 21-31. Print. "IR Spectrum." Research Gate. N.p.‚ n.d. Web. 08 Oct. 2014. Wagner‚ Kathryn. "Like Dissolves Like." LIKE DISSOLVES LIKE (n
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