experiment is to study the nature of ionic reactions‚ write balanced equations‚ and to write net ionic equations for precipitation reactions. A detailed view of the results can be found in the table below. Cations used: Barium‚ Copper‚ Iron‚ Sodium‚ Cobalt‚ Nickel Anions used: Nitrate‚ Carbonate‚ Chloride‚ Hydroxide‚ Sulfate‚ Bicarbonate‚ Iodide‚ Phosphate Questions A - Compare your results with the solubility rules and/or solubility table in your chemistry text. B - Do your results agree
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Changes in temperature or pressure cannot affect the rate of decay (disintegration) of radioactive elements. F Decay constant maintains its constancy only at the specific temperature. How much energy is lost or gained when a mole of cobalt-60 undergoes beta decay: 6027Co --> 6028Ni + 0-1e ? The mass of the 6027Co atom is 59.933819 amu‚ and that of a 6028Ni atom is 59.930788 amu. Answer Here? 2.724x1011 J energy is released. 2.724x1011 J energy is absorbed.
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was converted into a soluble precipitate by adding 25 mL of ammonium oxalate solution and 15 g of solid urea. Since the solution is acidic‚ the Ca2+ and C2O42- were dissolved. By boiling the solution‚ the pH of the urea increases thus large‚ pure crystals of precipitate was able to obtain. Subtracting the mass of the petridish alone from the mass of the petridish with CaC2O4 2H2O precipitate‚ one can get the mass of calcium oxalate dihydrate. And from that using stoichiometry‚ one can determine the
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Figure 1. “Couple of kidney stones on macro shot” Kidney Stones‚ is there a solution? By: Andrew Sailers CHM2046L.904 Instructor: Kia Williams Due: October 7‚ 2014 Introduction Kidney stones are a painful and dangerous urinary disorder that could cause severe cramping‚ block flow of urine‚ and sometimes cause a fever that “about 5 % of American women and 12 % of men suffer from at some point in their lives” (Kidney Stone Disease). “Most small stones measuring less than 5mm or 6mm can persist in
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x Normality of oxalate = ( x /100) = strength of oxalate in freshguava extract = normality x Eq. mass of oxalate ion= 1.32/100 x 44g/litre of diluted extract= 0.581 g L -1 2) For semi ripened guava (1 day old).Strength of oxalate in one day old guava extract= (1.37 /100) x 44g/litre of diluted extract= 0.603 g L -1 ) For ripened guavaStrength of oxalate in fresh guava extract= ( 1.39/100) x 44g/litre of diluted extract=0.612g L -1 (a) The normality of oxalate ions of; (i) Fresh
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rich source of oxalate ion and its content in the fruit varies during different stages. Oxalate ion are extracted from the fruit by holding pulp with dilute H2SO4. The Oxalate ions are estimated volumetrically by titrating the solution with standard KMnO4 solution. OBJECTIVE OF PROJECT In this project‚ we will learn the test the presence of oxalate ions in the guava fruit and how its amount varies during different stages of ripening. THEORY Oxalate ions are extracted
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Objective: • To learn some technique in volumetric analysis: Redox titration. • To review the stoichiometry of an oxidation-reduction reaction. • To practice the titration technique. • To determine the concentration of an unknown sodium oxalate (Na2C2O4) solution by titrating it against standardized potassium permanganate solution (KMnO4). Principle: Redox reaction is just like an acid-base reaction. An acid can show its acidic properties in the presence of base only. Like acid-base
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In liver the marker enzymes such as ALT and AST levels were recorded‚ whereas in kidney the levels of calcium‚ oxalate‚ phosphate‚ uric acid‚ creatinine‚ ALT and AST were conducted. The histopathological studies of kidney was also carried out. The values obtained in all the biochemical analyses of urine‚ serum‚ liver and kidney were presented and discussed below.
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Examination 2010 - 2011 An investigatory project on Chemistry PROJECT: TO STUDY THE PRESENCE OF OXALATE ION CONTENT IN GUAVA FRUIT AT DIFFERENT STAGES OF RIPENING. Submitted by: ANUKRITI SHARMA Class- XII – A (sci.) Roll no: 06 Air force school Chakeri ‚ Kanpur(up) CERTIFICATE This is to certify that ANUKRITI SHARMA has satisfactorily completed the project in CHEMISTRY on ‘OXALATE ION´ prescribed by the AISSCE course in this school in the year 2010-2011. I have examined the project
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Lab: 5 Experiment:13 Pre-Lab The purpose of this experiment is to observe an equilibrium reaction counteracting changes to it’s system all in accordance to Le Chatelier’s principle. An equilibrium reaction can be pushed toward products or reactant based on changes in temperature or concentration. The reversibility of reaction will also be looked at. Pre-Lab questions 1. The concentrations of products and concentrations of reactants remain constant but both reactions
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