"Sodium Carbonate" Essays and Research Papers

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Descaling a kettle

and washing machines. The chemical name for lime scale is calcium carbonate, chemical formula CaCO3. It is usually caused by hard water (Water containing a higher than normal concentration of dissolved minerals such as calcium and magnesium). http://www.purewaterpeople.co.uk/blog/2013/06/what-is-limescale/ How is lime scale formed? Lime scale is built up over a long period of time. When hard water evaporates the calcium carbonate deposits are left behind and over time they start building up. Lime...

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Chem Lab Report

anhydrous magnesium sulfate CAS #7487-88-9 Appearance: solid Melting point: Boiling point: Vapour density: Vapour pressure: Density (g cm-3): 1.07 Flash point: Explosion limits: Autoignition temperature: Water solubility: saturated sodium bicarbonate CAS #144-55-8 Appearance: white powder or crystals Melting point: 50 C Boiling point: Vapour density: Vapour pressure: Density (g cm-3): 2.16 Flash point: Explosion limits: Autoignition temperature: Water solubility:...

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Harmonium: Acidic Soil

grow. Farmers add lime, calcium oxide, to soil to help neutralise the soil as most plants grow best in neutral or slightly alkali soil. The lime can cancel out the acidity caused by acid rain. In agriculture, calcium carbonate may be added to acidic soil. The calcium carbonate enters into a neutralization reaction with some of the acid in the soil water, and the soil pH becomes more basic. In farming nitrogen oxide reacts with OH from the rain to form nitric acid which then acidifies the soil...

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Chemistry in Daily Life

for making window panes, bulbs &tumblers in soda glass. Soaps: [pic] Soaps are the detergents used since long. Soaps used for cleaning purpose are sodium or potassium salts of long chain fatty acids, e.g., stearic, oleic and palmitic acids. Soaps containing sodium salts are formed by heating fat (i.e., glyceryl ester of fatty acid) with aqueous sodium hydroxide solution. This reaction is known as saponification. Chemistry for washing: Chemicals make our clothes clean. Not only clothes but we also...

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Diffusion and Glucose

did the results compare with your prediction? The glucose diffused through the 200 MCWO membrane while the albumin didnt. 4. Put the following in order from smallest to largest molecular weight: glucose, sodium chloride, albumin, and urea. Sodium chloride urea glucose albumin Activity 2 Simulated Facilitated Diffusion 1. Explain one way in which facilitated diffusion is the same as simple diffusion and one way in which it differs. One way that facilitated diffusion...

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chemical industry

Why demand analysis of caustic soda? 2.1 CAUSTIC SODA Sodium hydroxide, also known as caustic soda, or lye, is an inorganic compound with the chemical formula NaOH. It is a white solid and highly caustic metallic base and alkali salt which is available in pellets, flakes, granules, and as prepared solutions at a number of different concentrations. Sodium hydroxide forms an approximately 50% (by weight) saturated solution with water. Sodium hydroxide is soluble in water, ethanol and methanol. This...

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Maximum Cell Size

Variable: * The diffusion rate of sodium hydroxide (cm/min) Controlled: * The concentration of sodium hydroxide (0.4%), same Na OH used throughout. * Temperature (°C), experiment takes place in the same classroom * Time immersed in Na OH (8 min), using the timer * Number of agar cubes in each beaker, excess of Na OH will be used * Concentration of agar cubes (%), same agar cubes used throughout the experiment Uncontrollable: * Volume of sodium hydroxide in each beaker (cm3) ...

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* 2 g Potassium Iodide per parts A, B, C * 2 g Sodium Chloride per parts A, B, C * 2 g Sucrose per parts A, B, C * 6 Bunsen Burners * 6 Test Tubes with 25 ml Ethanol each * 6 Test Tubes with 25 ml Water each * 6 100 ml beakers with 50 ml Water each * 10 g Calcium Chloride per parts D * 10 g Citric Acid per parts D * 10 g Phenyl Salicylate per parts D * 10 g Potassium Iodide per parts D * 10 g Sodium Chloride per parts D * 10 g Sucrose per parts D ...

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Production of Chalk from Eggshells

mineral calcite. It forms under reasonably deep marine conditions from the gradual accumulation of minute calcite plates shed belonging to the division of haptophytes. They function as a special calcium carbonate. Eggshell is another object that has the presence of calcium carbonate. It is used by animals to store their young in it and protect it. Some birds like the chicken force the eggs out while some wait for some time until it is out. The chicken egg is usually made as human food...

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An Investigation in to the Rate of Reaction

An investigation in to the rate of reaction Plan: I am going to investigate the rate of reaction. The reaction I will be using is: Calcium Carbonate + Hydrochloric acid ---- Calcium Chloride + water + carbon dioxide. CaCO3 + 2HCl ---- CaCl +H2O + CO2 Measurements and Variables: The variables I have chosen to change is strength of the hydrochloric acid which will be 1 mole, 0.7 mole, 0.5 mole, 0.3 mole and 0.1 mole some variable I will not be using are temperature, mass, density. The measurements...

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