Part 1 In part 1 of this lab, the heat capacity of a calorimeter was calculated. This was done by putting ice water in a calorimeter and measuring the temperature change every 30 seconds for 4 minutes. Then heated water was added to the cold water and the temperature change was measured again. The heat capacity of the calorimeter was then determined by using the formulas for heat, including q=mc ∆ T and q=mc ∆ T+C(cal) ∆ T. The heat capacity of the calorimeter was found to be 11.78J/K. Possible sources of error in this part were unintentional cooling/heating of the water and the thermometer not reading correctly. Part 2 In part 2 of this lab, the heat capacity of an unknown metal was determined. This was done by heating a sample of the metal in boiling water and then adding the sample into water in a calorimeter and measuring the temperature changes over a 3 minute period. With the data, the specific heat for the unknown data was found using the heat formulas; q= mc ∆ T+Ccal ∆ T and q=mC(metal)
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This note was uploaded on 03/14/2010 for the course CHEM 109A 109A taught by Professor Aue during the Spring '09 term at UCSB.