CaCO3+2HCl-----CaCl2+CO2+H2O 2. CaCl2+K2CO3====CaCO3+2KCl The first reaction shows the separation of calcium carbonate from the mixture. In the second reaction we use the product of the first reaction (CaCl2) and change it back to calcium carbonate (CaCO3) by mixing CaCl2 with potassium chloride (2KCl). Objective To separate the components of mixture of sand‚ sodium chloride and calcium carbonate. Materials and Equipment 1. Two beakers 2. Experimental mixtures 3. Distilled water 4. Funnel 5. Filter
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Limestone is a sedimentary rock composed of calcium carbonate (CaCO3). There are various types of limestone‚ as well as different methods for formation. When limestone is formed through precipitation of water‚ it is called chemical limestone. When limestone is formed from the shells or skeletons of dead marine organisms‚ it is called organic limestone. Limestone is soluble‚ so it is very common in Karst landscapes. Limestone has many uses‚ but it’s most common use is as a building material for architectural
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Addition of carbon Combustion is the rapid burning of fossil fuels. Stored carbon in coal‚ oil and natural gas returns to the atmosphere when these fossil fuels are burnt and during natural combustion occurrences such as volcanic eruptions. Fossil Fuels such as coal are constructed when a living organism dies and decomposers‚ ie Fungi and microbes are unable to decompose it. After the organic material is untouched for millions of years‚ it eventually turns into fossil fuels. Petroleum‚ coal and
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the coral reefs either. “This is damaging many ocean species that use calcium carbonate to form their skeletons and shells. Studies have shown that calcium carbonate formation is disrupted if water becomes too acidic”(Fujita‚ pg 2‚ par 8). So not only coral reefs being effected in skeletal growth‚ but all organisms that have an outer shell or exoskeleton have trouble developing a strong shell as the acid restricts the calcium production. Another effect that climate change brings about is rising sea
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substance ‘X’ is used for white washing. (i) Name the substance ‘X’ and write its formula. (ii) Write the reaction of the substance ‘X’ named in (i) above with water. Answer (i) The substance ‘X’ is calcium oxide. Its chemical formula is CaO. (ii) Calcium oxide reacts vigorously with water to form calcium hydroxide (slaked lime). Question 2: Why is the amount of gas collected in one of the test tubes in Activity 1.7 double of the amount collected in the other? Name this gas. Answer Water (H2O) contains
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Name: Daija Warren Due Date: February 1st School: Lake Arbor Elementary School Grade: 6th Teacher: Mr.Debaun Problem: How can I make an egg bounce? Hypothesis- I think the hard-boiled egg is more likely to bounce because it is soft once you finish cooking it and the raw egg will be hard cause of the shell on it “How to Make an Egg Bounce” By Daija Warren Lake Arbor Elementary School February 1‚ 2011 I would like to thank my mom
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Introduction: The goal of this experiment was to measure the amount of gas produced in various reactions. The Ideal Gas Law was needed in order to calculate the mass of reactants and moles of gas produced: ‚ where is the pressure in atm‚ is the volume in Liters‚ is the number of moles‚ is the ideal gas constant [0.082 (Latm)/(Kmol)]‚ and is the temperature in Kelvins. Considering the units on R‚ it was important to convert pressure‚ volume‚ and temperature to atm‚ L‚ and K‚ respectively. In
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synthesis. It is the breakdown of a compound‚ usually through electrolysis. Electrolysis is a method of separating bonded elements or compounds by passing an electric current through them . An example of a decomposition reaction is Calcium carbonate calcium oxide+ carbon dioxide Single displacement is the replacement of one element with another in a compound. One of the elements is one of the reactants‚ and a metal replaces a metal or a non-metal replaces a non-metal. Eg. Magnesium
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body. There are various bone and joint ingredients including calcium‚ soy isoflavone and collagen. For instance‚ calcium is the most popular bone ingredient. It is an established ingredient with a mature market. Soy isoflavone is another key bone health ingredient maintaining bone mineral density (BMD) and preventing bone loss. The most important ingredients of joint ingredient market are glucosamine and chondroitin. Collagen‚ eggshell membrane and olive polyphenols are other ingredients which stimulate
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OSTEOPOROSIS Stroehlein OBJECTIVES Osteoporosis • Porous bones • Systemic skeletal disease-loss of bone mass (low bone density) • Increased bone fragility-risk for fracture • 44 million Americans‚ more than one tenth of the population • One of the most common disorders associated with aging ‚although NOT a consequence of normal aging Risk Factors and the Effects on Bone Typical Loss of Height Associated with Osteoporosis and Aging Manifestations • Loss of height • Pain does not occur unless
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