Thursday 9/29/11 3:00pm Michaela Howard Partner: Craig Delancy Separation of a Mixture Containing Calcium Carbonate and Naphthalene Objective: Finding a method to successfully separate a mixture of calcium carbonate and naphthalene. Properties to be considered: Calcium Carbonate Naphthalene Solubility in water slightly insoluble Solubility in ethanol insoluble partially Melting point 825 degrees C 80.2 degrees C Boiling point decomposes 218 degrees
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Hypothesis: The higher the concentration of hydrochloric acid‚ the faster the reaction will take place because there will be more hydrochloric acid particles to collide with the marble chip particles therefore resulting in a quicker reaction. The lower the concentration‚ the weaker the reaction will be as there will be fewer particles so less chance of a collision and a lower rate of reaction. Equipment: Conical flask – to hold the hydrochloric acid and marble chips Boiling tube – to hold
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PRE-LAB QUESTIONS: 1) What cations are responsible for water hardness? Ca2+ and Mg2+ are responsible for water hardness 2) Calculate the mass of disodium Ethylenediaminetetraacetate required to prepare 250 mL of a 0.010 M solution. Mass = M x L x MM 0.010 M x 0.250 L x 372.24 g/mol = 0.93g of Na2H2Y 3) What is the molar concentration of the Na2H2Y solution? mol Ca = M x L 0.0107 M x 0.025 L = 2.65 x 10-4 mol if 1 mol of Ca = 1 mol Na2H2Y then: M of Na2H2Y = mol / L 2
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I. INTRODUCTION * Background of the study Nowadays our country is facing economic crisis and also pollution that makes our Environment damage so we decided to make funky colored sidewalk egg chalk as our science investigatory project. So based on our title name we will use eggshell not any eggshell because we will use chicken eggshell as an alternative ingredient for sidewalk chalk‚ we believe that this study will be great and popular because as of now children‚ students and teachers consume
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Experiment 05 Water Hardness October 8th‚ 2013 The hardness of water was determined using the methods of titration‚ conductivity‚ and pH analysis. The mean and uncertainty of CaCO3 is 134±36.0 ppm. An error that could have potentially happened could be that the equivalence point was not correctly established causing inaccurate data. BACKGROUND: 1In hard water there is a high amount of mineral content present in the water. Most of the mineral content that is present
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Title: Measuring the loss in mass of Marble chips and Hydrochloric acid Aim: We will measure the loss in mass of the marble chips (CaCO 3 ) as it reacts with Hydrochloric acid (HCl). This one method of measuring the rate of reaction. We will use a balance to measure this mass loss as the reactants are used up to form product. Safety: * As Hydrochloric acid is corrosive wear a lab coat‚ gloves and safety goggles. * Take care when using the glassware not to cut yourself. * When
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Project Analysis of DSMAC 8000 tpd Limestone Crushing Line DSMAC has contracted on a 8000 TPD limestone crushing line project at the end of 2012. How about the feasibility of this production line? Will it become profitable in the future? There is a project analysis from DSMAC. Project Overview: Productivity: 8000tpd limestone crushing line Contractor: DSMAC Site: India Project Feature: aggregate production and limestone production for cement plant Application Demand: cement raw material‚ sandstone
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A Separate Peace Obstacles after obstacles came in the path to success. In the novel A Separate Peace‚ John Knowles revealed a very strong idea through one of his characters. Through Gene it was revealed that weak individual who once was weak morally and mentally can become a strong and a more matured person. John Knowles revealed this idea through Gene’s perspective; symbolism; and also Gene’s speech/action. Gene had proved many things through only his perspective. He had intriguing
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Can Water Damage Concrete? Concrete is among the most useful substances ever produced. Mixed and used well‚ it produces a very durable material that’s perfect for constructing buildings and other structures. Science‚ however‚ has other ideas. While many may consider concrete very sturdy‚ its biggest enemy seems somewhat benign in comparison: water. Industry experts such as AlliedFinishes.com offer good proof. In commercial settings‚ buildings like warehouses and large-scale kitchens often feature
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This experiment is to show how much carbon dioxide is produced during the reaction between an acid (hydrochloric acid) and marble. Equipment: Hydrochloric Acid (20ml) - 0.5M‚ 1M‚ 2M Marble Chips (2g per test) Large Measuring Cylinder Plastic Bowl (3/4 full of water) Rubber Tubing Glass Conical Flask Stopwatch Method The first thing that we did was fill the plastic bowl with water. We only filled it up 3/4 of the way because otherwise the water displaced into
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