The Enthalpy Change of the Decomposition of Calcium Carbonate _INTRODUCTION_ RESEARCH QUESTION: What is the enthalpy change of the decomposition of calcium carbonate? BACKGROUND: Enthalpy in chemistry can be thought of as the energy contained within the bonds‚ or the internal energy‚ but it is not heat and you can only measure changes in it. When bond bonds break in the reactants energy is given off‚ when bonds form‚ energy is absorbed. If the energy absorbed is less than the energy released
Free Thermodynamics Energy Calcium carbonate
Purpose Since there are two possible oxidation numbers for the iron nails‚ by this experiment we will need to determine the actual oxidation number of the iron in this experiment. Hypothesis As said in the introduction there will be two possible decomposition reactions: Fe (Ⅱ) + CuCl2 (aq) → Cu + FeCl2 2Fe (Ш) + 3CuCl2 (aq) → 3Cu + 2FeCl2 We can measure the mass of the two iron nails‚ and the copper after the reaction. Thus‚ we can compare the ratio of the mole and the mass of iron and copper. Procedure
Free Stoichiometry Iron Yield
Decomposition of Sodium Chlorate to Create Oxygen Gas Introduction: There are several types of chemical reactions. Those reactions include synthesis‚ decomposition‚ single replacement‚ and double replacement. In this experiment‚ we will be decomposing sodium chlorate to create oxygen gas. In a decomposition reaction‚ a chemical compound is being separated into elements or simpler compounds. AB → A + B is a simple way of expressing what happens in a decomposition reaction‚ AB break down into A
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P LANNING Aim: Our aim is to detect which factors affect the rate of the decomposition of hydrogen peroxide with a fixed mass of catalyst. A catalyst is a substance‚ which alters the speed‚ or rate of a chemical reaction but is chemically unchanged at the end of the reaction. The two factors that we can change are the temperature and the concentration. We chose to vary the concentration of hydrogen peroxide. The catalyst to speed up the reaction without affecting the result will be manganese
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Data Mining-Driven Analysis and Decomposition in Agent Supply Chain Management Networks Kyriakos C. Chatzidimitriou1‚ Andreas L. Symeonidis1‚2 and Pericles A. Mitkas1‚2 1 Department of Electrical and Computer Engineering Aristotle University of Thessaloniki‚ GR541 24‚ Thessaloniki‚ Greece 2 Intelligent Systems and Software Engineering Laboratory Informatics and Telematics Institute/CERTH‚ 57001‚ Thessaloniki‚ Greece {kyrcha‚asymeon}@issel.ee.auth.gr‚ mitkas@auth.gr Abstract In complex
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Doña Aurora National High School Utilization of Different Varieties of Dried Leaves into Organic Fertilizer using Earthworms (Lumbricus terrestris) as Agents for Fast Decomposition Chapter I (Introduction) A. Background of the Study Since ancient times‚ farmers have known that adding certain substances to the soil helps produce healthier‚ more abundant crops; such a substance is called fertilizer. The researchers decided to make an organic fertilizer. Organic fertilizers are made up of
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Looking back at the research question‚ the actual amount of reactant did not match the theoretical stoichiometric amounts according to the balanced equation‚ but the amount of catalyst matched the original value when uncertainty is taken into account. The percent yields for the reactants in the equation are very far from 100% yield. In the case of water‚ the percent yield came out to be meaning there were at least 2 times to 4 times more water than there should be. The percent yield of oxygen came
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Indo-Anglian Authors It’s the same Indian Curry – the spices are Indian‚ the flavours remain rural and the colours are still rich and earthy‚ except for the fact that it is savoured with a different spoon. That is Indo-Anglian literature or English literature penned by an Indian author. With the sudden surge of writers in this genre‚ its history is very recent‚ mostly limited to the last two centuries. As a category it owes its roots to the post-colonial era and today with almost three Nobel laureates
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Paper I : Poetry-I Unit 1 : Explanations with reference to the context from the starred texts Geoffrey Chaucer : “General Prologue”* to The Canterbury Tales The Nun’s Priest’s Tale John Donne : “The Canonization* “A Valediction:Forbidding Mourning” “The Sunne Rising” “The Ecstasie”* : Paradise Lost‚ Book I : Essay on Man* : “Introduction” “Earth’s Answer” “The Tyger”* “London” (from Songs of Experience) Unit 2 : Unit 3 : John Milton Unit 4 : Alexander Pope William Blake
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of her life and said it formed the very basis of her belief in democracy. Benazir father‚ Prime Minister Zulfikar Ali Bhutto‚ was removed from office by the then chief of army General Muhammad Zia-ul-Haq following a military coup in 1977. Zia imposed martial law but promised to hold elections within three month but instead of fulfilling the promise of democracy. General Zia charged Zulfikar Bhutto with conspiring to murder the father of his opposing politician Ahmed Raza Kasuri. Benazir and her
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