:ABSTRACT The researcher conduct this study due to economics crisis nowadays. It’s aim to create a product of chalkwhich is cheaper and could give the same quality which the commercial one could give through eggshells. This steps was made by the researcher to make a chalk out of eggshells;First she clean the empty eggshell of the chicken through washing‚then when the eggshells is already dry‚ she pound the clean eggshells very well until it will become a powder‚then she get the residue and she separate
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Describe how the presence of substances in the table above: copper(II) sulfate‚ iron(II) sulfate and cobalt(II) chloride) change rate of the reaction. Unit 2 learning Aim C – How fast is your reaction? – Part 4 Chemical equation calcium carbonate + hydrochloric acid calcium chloride + carbon dioxide + water CaCO3(s)
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found in several common commercial antacids‚ and the reactions by which these antacids neutralize the HCl in stomach acid. Compound Chemical Formula Chemical Reaction Aluminum hydroxide Al(OH)3 Al(OH)3(s) + 3 HCl(aq) -----> AlCl3(aq) + 3 H2O(l) Calcium carbonate CaCO3 CaCO3(s) + 2 HCl(aq) -----> CaCl2(aq) + H2O(l) + CO2(g) Magnesium carbonate MgCO3 MgCO3(s) + 2 HCl(aq) -----> MgCl2(aq) + H2O(l) + CO2(g) Magnesium hydroxide Mg(OH)2 Mg(OH)2(s) + 2 HCl(aq) -----> MgCl2(aq) + 2 H2O(l) Sodium bicarbonate
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rain also forms from burning fossil fuels which forms sulphur and nitrogen oxides. When acidic rain falls and sinks into the ground. As the rainwater continues into the ground‚ it meets with the limestone. Limestone is mostly made up of the mineral calcium carbonate (CaCO3)‚ which is not very soluble‚ so the rocks don’t dissolve very quickly. But‚ if you add an acid‚ you add hydrogen ions (H+)‚ which will react with the carbonate to form hydrogen carbonate (HCO3- ions)‚ which are extremely soluble in
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xNaOH + NaxA + xH2O 5. A solution of hydrochloric acid of volume 25.0 cm3 was pipetted onto a piece of marble which is calcium carbonate. When all action had ceased‚ 1.30g of the marble had dissolved. Find the concentration of the acid Equation: CaCO3 + 2HCl CaCl2 + CO2 + H2O 6. What volume of 0.1 moldm-3 hydrochloric acid would be required to dissolve 2.3 g of calcium carbonate? Equation: CaCO3(s) + 2HCl(aq) CaCl2(aq) + CO2(g) + H2O(l) 7. 2.05 g of the carbonate of an unknown alkali metal
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Introduction We are going to do an experiment to see how surface area effects the rate of reaction when added to hydrochloric acid. I will add calcium carbonate (marble chips) to hydrochloric acid. When calcium carbonate is added to hydrochloric acid a reaction takes place. The solution fizzes and gives off the gas carbon dioxide. I will collect this gas in a gas syringe and will time how long it takes for the reaction to produce 100cm3 of carbon dioxide. CaCO3 +2HCL Co2 +CaCl2 +H2O CalciumHydrochloricCarbonCalciumWater
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to determine the identity of two unknown elements. Hypothesis If the color of one of the unknown elements is the same as one of the known elements‚ then they are the same element. Materials * Samples of the following metallic salts * calcium chloride * copper chloride * iron chloride * lithium chloride * potassium chloride * sodium chloride * strontium chloride * unknown 1 * unknown 2 * Bunsen burner and accessories * Safety goggles * Lab apron
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sedimentary rock‚ a form of sedimentary rock composed of 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
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composed of 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
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Effects of Electrical Stimuli and Injected Reagents on Frog Hearts Melissa Higdon Section 05‚ Group 01 November 19‚ 2013 Introduction: The heart is a very complex muscle for all species. It is responsible for sending oxygenated blood throughout the body as well as sending deoxygenated blood to the lungs‚ and continuously circulate this way for as long as we are alive. Many things can be effected‚ for example how fast the heart beats or how much
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