The Calorimeters Calorimeters are a device that can measure the heat that comes from burning an item. Simple Calorimeter A simple calorimeter is used to detect the enthalpy change when a fuel is burned. The fuel is burnt to heat a specific mass of water and then measure its rise in temperature. The word calorimeter comes from the Latin phrase calor which means heat. A simple calorimeter just consists of a thermometer attached to a metal container full of water suspended above a combustion chamber
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Introduction The experiment is testing for the formation of precipitates caused by different limiting reactants. A precipitate results in a solid formed by an ionic compound. Calcium nitrate and copper sulfate will be added to separate beakers with approximately half of the solutions from the Büchner funnel system of each trial to test for the formation of precipitates. The limiting reactant is the reactant that will run out first in the chemical reaction. It is important to recognize which chemical
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this experiment‚ you will observe the reaction of iron nails with a solution of copper (II) chloride and determine the number of moles involved in the reaction. You will determine the number of moles of copper produced in the reaction of iron and copper (II) chloride‚ determine the number of moles of iron used up in the reaction of iron and copper (II) chloride‚ determine the ratio of moles of iron to moles of copper‚ and determine the number of atoms and formula units involved in the reaction. Through
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exothermic B. is endothermic C. has H > 0 D. both a and c are correct E. both b and c are correct 4. Calculate the heat of vaporization of carbon tetrachloride given that the standard molar enthalpy of formation of liquid carbon tetrachloride is -135.4 kJ/mol and the standard molar enthalpy of formation of gaseous carbon tetrachloride is -102.9 kJ/mol. A. +102.9 kJ/mol B. -32.5 kJ/mol C. +238.2 kJ/mol D. +32.5 kJ/mol E. -238.2 kJ/mol 5. The complete combustion of 1 mole of propane
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eight test tubes‚ a rack for the tubes‚ three strips of Zinc‚ two strips of Copper‚ three strips of Magnesium‚ steel wool‚ Lead nitrate‚ Silver nitrate‚ Copper sulfate‚ Magnesium chloride‚ Zinc chloride‚ Sodium chloride‚ and Potassium. V. Procedure: In tube 1 add five drops of Lead nitrate. In tube 2 add five drops of Silver nitrate. Drop a strip of copper metal into tubes 1 and 2. Next add five drops of Copper sulfate into tube 3‚ five drops of Lead nitrate into tube 4‚ and five drops of Magnesium
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set for each of the following sample solutions: water‚ protein‚ starch‚ lipid‚ vitamin C and an unknown sample. 0.5 L of each solution was added to each tube. One drop of each of the three indicator solutions (iodine‚ Sudan III and Biuret & copper sulfate) was added to each sample solution to determine how that sample solution (and that type of macromolecule) would react with each specific indicator. The results were recorded in the data chart below. The identity of the unknown solution was determined
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Bag Oxidation-Reduction Activity Series 1 Copper (II) Sulfate‚ 1 M - 3 mL in Pipet 1 Iron (III) Chloride‚ 2 M - 3 mL in Pipet 1 Iron Metal‚ 2 pc in Bag 2"x 3" Magnesium Metal (ribbon) - 2 Small Pieces in Bag 2"x 3" 1 Magnesium Sulfate‚ 2 M - 3 mL in Pipet 1 Lead metal‚ 4 small pieces in bag 2 x 3” 1 Sodium Sulfate‚ 1 M - 3 mL in Pipet 1 Zinc Metal - 2 Small Pieces in Bag 2"x 3" 1 Zinc Nitrate‚ 2 M - 3 mL in Pipet Procedure 1. Place 10 drops of Sodium sulfate‚ Na2SO4 into well A1 of the 24-well plate
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materials using cheesecloth. A clean‚ cotton cloth was then subjected to a series of procedures from pretreatment and mordanting down to dyeing with the rnangosteen extract. Alum and copper sulfate were used as mordants. Results revealed that the mangosteen extract was stabilized by both mordants‚ but copper sulfate was a better fixing agent than alum‚ because it intensified the color of
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relationship between copper and iron in a chemical reaction. The stoichiomentry of mass is that during the heating the experiment does loose mass .This mean that mole and mass did change. An Example of real world is Masses and volumes of products are extremely important in key reactions such as the deployment of air bags in vehicles‚ carbon dioxide production to help bread rise‚ and the Production of ammonia gas for industries. To do this lab we weighed Copper. Than we weighed
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coating a metal object with a thin layer of another metal by means of electrolysis. 2) What is Copper Plating? Copper plating is a coating of copper metal on another material‚ often other metals. Plating is designed to increase durability‚ strength‚ or visual appeal‚ and copper plating specifically is often used to improve heat and electrical conductivity. 3) What are the uses of electro-plating/copper plating? Electroplating is used to give metal objects a better appearance or to protect them
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