Name: Name of lab partner: Date: Title: Determination of the valency of magnesium Objective: To study the quantitative relationship between the amount of reactant and products of a reaction. A known starting mass of magnesium and the measured collection of hydrogen gas will be used to determine the reaction stoichiometry and the valency of magnesium. Introduction: In Chemistry‚ stoichiometry is the study of the quantitative relationship between amounts of reactants and products of a reaction
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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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Report – Pool of Siloam (Jerusalem) Sharon Brown BIBL 471 Liberty University Pool of Siloam (Jerusalem) Thesis Statement This report is to give information on the excavations of the Pool of Siloam and how it relates to the Bible. The Pool of Siloam is an important site as it helps to prove the New Testament story of the healing of the blind man in Jesus’ time at this pool. It is a historical site as it is specifically mentioned by name in the Bible‚ not some random pool that the
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Water Technology Hardness of Water: Natural waters containing large quantities of dissolved salts of Calcium (Ca) & Magnesium (Mg) is called hard water. It is a characteristic of preventing lather formation of water with soap. Ca2+ & Mg2+ ions react with soaps which are salts of fatty acids (stearic or palmitic acid) to give insoluble scums or precipitates of calcium or magnesium stearate or palmitate. 2C17H35COO- + Ca2+ → (C17H35COO)2 Ca (scum) 2C17H35COO- + Mg2+ → (C17H35COO)2
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with various weapons and shield that expands their quality. Despite the fact that your travelers naturally assault‚ you’ll need to tap your screen over and again to perpetrate harm on your foes. Every time you touch your screen you’ll be tossing a lightning striking onto a gathering of foes‚ and obviously you’ll get the opportunity to control how solid that pillar is.
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2-11-15 Determination of Ka of Weak Acids Purpose: The purpose of this lab is to find the strength of weak acids by determining the equilibrium constants for their ionization reactions in water. Is to use their measured pH values to calculate the pKa for the two unknown weak acids thus determining their identities. Hypothesis: If we neutralize a solution that contains a weak acid by adding a strong base to the solution‚ then the ions will be isolated and thus finding the concentrations of each
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In this text‚ I would like to show my rating about the novel “Dip in the pool” by Roald Dahl. The text was a little bit of funny and makes the reader to stay for reading more‚ that is why I wanted to recommend it. The book review consists of analyzing a book‚ rate it as you wish and if you recommended or not. “Dip in the pool” make me understand about how humans bet all its needs to win an auction and do some things that takes risk. This book I will put it in a gender of comedy because if you read
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hip-hop and tap dancing. Professional dancing was first introduced in the early years of Italian Renaissance when music‚ dance‚ arts and poetry started to rise in popularity after the millennia of medieval stagnation. It was around this time that
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Purpose: The purpose of this was to determine the concentration of sodium carbonate in an unknown sample by titration. The solution of hydrochloric acid was prepared and standardized using Na2CO3. Observations: Week 1: Standardizing hydrochloric acid using sodium carbonate with bromocresol green indicator Table 1: Titration of sodium carbonate using hydrochloric acid Trial | Mass of Na2CO3 (g) | Burette Reading (mL) | Final Volume of HCl (mL) | | | Initial | Final | | 1
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Gravimetric Determination of Phosphorus in Fertilizer Samples ------------------------------------------------- Results and Discussion More than 50% of fertilizers are composed of nitrogen‚ phosphorus and potassium because these three nutrients are essential but are deficient in soils. To ensure good quality of fertilizers‚ it is significant that the amounts of these nutrients are quantified. In this light‚ gravimetric principles are of much use. The objective of the experiment is to determine
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