Salt Lake Community CollegeEngineering DepartmentThermo Lab ReportENGR 2300 Engineering Thermodynamics--LabsFall 2014Alex PinegarThermo Lab # 2 The Conservation of EnergyDescription: In this experiment, hot and cold water with known temperatures and masses were combined. By using the definition of calorie, I was able to find the amount of heat energy that was transferred by bringing the hot and cold temperatures to a final common temperature. Figure 1.1Procedure: The masses of the empty calorimeters were determined. Both calorimeters were filled to about 1/3 full with water, one being filled with hot, and the other cold water. Then the weights were determined again to find the mass of the water and the calorimeter. The temperatures of each were recorded, then the hot and the cold water were combined, stirred, and weighed in the cold calorimeter.

Formulas & Data: Table 2.1: Data Collected

18.8 g

19.1 g

219.8 g

230.0 g

428.1 g

The following equations will be needed:

Table 2.2: Calculations

Calculations:

Conclusion: As we can see there is a small discrepancy in the numbers disregarding the sign change. The reason for that could be due to heat being gained by stirring or heat lost to the environment during the time the experiment took place.

Figure 2: Industrial Calorimeter