you mix copper‚ silver‚ and nitrate together‚ you will end up with silver nitrate solution will turn blue (it has become copper nitrate). On the piece of copper‚ there would be a coating of solid silver. If a chemical reaction is going to be observed when chemicals are mixed‚ heated or any other means of altering the substance‚ then we will be able to predict the products formed. If it is observed that in the original versus the changed substance no new substances are formed‚ the change is reversible
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1 An Exercise in Solution Preparation – The BR Oscillation Reaction By Issra Mehdi Date: January 28‚ 2010 This experiment was performed using familiarity with molarity‚ percent composition‚ and density to prepare solutions that will display chemical oscillation upon mixing. Solution A was prepared by transferring the calculated amount of malonic acid to a volumetric flask with a small amount of distilled water. Then the calculated amount of manganese sulphate solution was pipeted to the
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Report Sheet Experiment 1 0 Balance the equations for the three reactions studied. Note‚ in all reactions the numbers of atoms of each type and the total charge must be equal on each side of the equation. Equations 1) Cu + 4H+(aq) + 2NO3-(aq) Cu2+(aq) + 2NO2 + 2H2O 2) Cu2+(aq) + 2-OH(aq) Cu(OH)2 3) Cu(OH)2 + heat CuO + H2O (Balanced) 4) CuO + H2SO4 Cu2+(aq) + SO42-(aq) + H2O (Balanced)
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Copper sulphate experiment Introduction There are a number of different methods of making salts‚ such as the reaction of a metal with an acid. Copper metal‚ however‚ does not react with sulphuric acid and so another method must be used. In this experiment a basic copper compound (copper(II) oxide) will be reacted with sulphuric acid giving copper(II) sulphate as one of the products. Method 1. Wear goggles and keep your face away from the beaker during the reaction 2. Place 20 cmm3 sulphuric
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may affected the mass of the copper was recovered and also the percentage of yield. According to the law of conservation of matter‚ the mass of the copper will not change even though there are many chemical reactions happened which also mean that the mass of copper contained in solutions or precipitates remain the same as the copper in the beginning. And it is necessary to synthesize the various copper compounds in order to recover metal because the amount of copper might be left due to some errors
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MAYBELLINE CLEAR SMOOTH FACE POWDER Background Story Months after the successful launching of Maybelline Clear Smooth Face Powder‚ Rose B. Librieza‚ Coordinator of Marketing Operations‚ found herself reading survey results handed to her by one of her staff. As of three weeks ago‚ there is still no substantial data that will tell whether the Clear Smooth Face Powder is now the product leader in terms of its category in the market so she had a survey done to evaluate product performance. The report
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! Isolation of the Components of BC Powder Introduction Aspirin‚ Caffeine and Salicylamide were extracted from an over-the-counter pain reliever (BC Powder). These components were separated by manipulating their solubilities by adjusting the acidity and basicity of the solution. By doing this‚ the three components were forced into conjugate acid (or base) forms‚ causing selective solubility in either an aqueous or organic solvent. These layers were then separated by use of a separation funnel
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1 Determination of Empirical Formula: Preparation of a Copper Sulphide. Aim The aim of the experiment was to determine the empirical formula of sulphide of copper and to make sure that an amount of copper metal reacted with elemental sulphur‚ Eq. 1. To be able to calculate the empirical formula of copper sulphide‚ the mass (grams) of copper has to be known and the mass (grams) of copper sulphide after the reaction. Copper‚ chemical formula Cu‚ is a known metal with a red-brown
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chemical element copper‚ with Atomic Number 29‚ has been extensively used for thousands of years because of several primary properties that have dictated its use throughout history. Among them we can count durability‚ strength and‚ as a semi-noble metal‚ good resistance to corrosion. With a hardness of 3 on the Mohs scale‚ pure copper is relatively soft and malleable‚ which makes it an easy metal to work with. Analyses of artefacts from lithic civilizations have shown that native copper had not only
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Usman Omid Chemistry IB 1A Enthalpy Of Solution _Introduction_ AIM The aim of this investigation was to determine the enthalpy of the solution created when dissolving Sodium Hydroxide (NaOH) in water (H2O). THEORY When a solid ionic compound is dissolved in water a change of enthalpy is involved. _The enthalpy of a solution_‚ ΔHsol is the enthalpy change when one mole of the substance is dissolved in water to form aqueous solution. � CHEMICAL Sodium Hydroxide (NaOH) PROCEDURE The recommended
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