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Unformatted text preview: 16 Virginia Lieu October 31, 2008 GSI: Paul Ganssle Enthalpy of the Combustion of Magnesium Purpose In this experiment, the objective is to determine the heat of reaction, or enthalpy, for two reactions of magnesium with hydrochloric acid and magnesium oxide with hydrochloric acid with the use of a calorimeter in order to determine the enthalpy of combustion of magnesium. Method All materials were thoroughly cleaned with distilled water for the experiment to ensure accurate readings. During Investigation 1, the calorimeter was weighed without the lid or thermometer and then was filled about half full of room temperature water and re-weighed in order to find the amount of water added. In a separate large beaker, a cold water ice bath, made with plenty of ice, was made. The temperature of both the calorimeter and cold water ice bath was recorded every 30 seconds until temperature of both stabilized to set a base temperature. Cold water without ice was poured into the calorimeter until it was approximately three-quarters full. Temperature was then recorded as above. The calorimeter was reweighed to determine the amount of cold water added.then recorded as above....
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