determine whether or not a chemical reaction occurred after the mixing of various chemicals. The evolution of a gas‚ the formation of precipitation‚ and the change of temperature or color are all indicative of a chemical reaction. It was assumed that a reaction did not take place if the mixture of chemicals exhibited none of these characteristics. Several precipitation‚ complex-ion formation‚ redox‚ and acid-base reactions were performed. Redox: Decomposition Reactions In a 13 x 100 mm test tube‚ 2 mL
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be focused primarily on financial issues and therefore‚ the director of Internal Audits should report to the CFO. Audit committee member: The committee member felt strongly that the Audit Committee as currently constituted is appropriate and no changes need to be made. Although none of the committee members are trained accountants they all have extensive industry experience‚ they have all been associated with Nano Circuits in various capacities for many years‚ and are well qualified to fulfill
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reflux the solution for 30 minutes by heating the solution until it boils‚ after this we allow the solution to cool down and then poured it into a125ml separatory funnel to drain and discard the lower spent acid layer. We washed the organic layer with a combination of 20ml of saturated sodium bicarbonate solution and 20ml of ether. Then we drained the lower aqueous layer and we kept the organic layer. We added 4 to 5 pellets of calcium chloride to the organic layer and allowed the solution to dry
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Proposing a Solution I live outside of a small town of 3‚000 people. The water system of our small town supplies drinking water to a population of 3‚000 to 5‚000. Our water system has been in place for 20 plus years and neglect has been rampant for almost the same period of time. Public water systems are governed by regulations and monitored by the State of Louisiana. The Town of Ferriday has been under state mandated “boil orders” more times that you could count. One of the more recent events
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Solution: i. Establishment of estimated growth rate in earnings and dividends. XYZ Company’s current EPS is $4.75. It was $3.90 a year ago. The company pays out 35% of its earnings as dividends‚ and the stock sells for $45. a. Calculate the past growth rate in earnings. b. Calculate the next expected dividend. Assume that the past growth rate will continue Answer: If payout ratio is constant‚ then dividend growth rate will be same as earnings growth rate. a) dividend growth rate over
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Communist Party of the Philippines (CPP)‚ and the Muslim separatist movement of the Moro National Liberation Front (MNLF). One of his first actions was to arrest opposition politicians in Congress and the Constitutional Convention. Initial public reaction to martial law was mostly favourable except in Muslim areas of the south‚ where a separatist rebellion‚ led by the MNLF‚ broke out in 1973. Despite half-hearted attempts to negotiate a cease-fire‚ the rebellion continued to claim thousands of military
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rate of reaction between Mg and H2SO4 Introduction: Increasing the concentration (in moles) of H2SO4 will increase the rate of the reaction when a ribbon of Mg is added to the solution. The rate of the reaction all depends on how strong the concentration of the solution is. Research question: Does altering the concentration of H2SO4 increase the rate of reaction when a ribbon of Mg is mixed with the solution? Variables: Independent Variable: The concentration of the solution (in moles)
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Lab Report Name: _____ Date: ______ Ionic Reactions List all of the cations used: Cobalt‚ Copper‚ Iron‚ Barium‚ Nickel List all of the anions used: Phosphate‚ Iodide‚ Sulfate‚ Chloride‚ Bicarbonate‚ Carbonate‚ Hydroxide Compare your results with the solubility rules and/or solubility table in your chemistry text. QUESTIONS: A - Do your results agree with your expectations
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rashes. It is a skin disease marked by small and itchy rashes. When the sweat accrues in certain parts of our body and results in the formation of small red bumps‚ which causes irritation and severe itching‚ then trying out prickly heat powders is a very possible solution. Prickly heat mostly affects back‚ underarms‚ near waist area‚ and chest. Newborns and infants are predominantly vulnerable to prickly heat because their sweat ducts are not mature. This makes it easier for the beads of moisture to be
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rate of electrolysis. An investigation to find out what factors affect the rate of electrolysis of a solution containing copper (II) ions. Plan It is known that by passing a constant electric current through a copper sulphate solution the passage of ions through this solution results in copper atoms being dissolved into the solution from the anode‚ which has a positive charge while positive copper‚ ions (cations) are also being discharged at the cathode which has a negative charge. Normally anions
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