Conservation of Heat Lab - Denisse Perez Young Period 3 Conservation of Heat Lab Abstract The experiment is conducted in order to determine how

# Conservation of Heat Lab - Denisse Perez Young Period 3...

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Denisse Perez Young Period 3 12/19/11 Conservation of Heat Lab Abstract The experiment is conducted in order to determine how conservation of energy is applied and can be observed when two masses of water originally at different temperatures are combined. According to the principle of conservation of heat, heat travels from warmer to cooler temperatures. In this experiment, a mass of cold water is contained within a calorimeter as its initial temperature is recorded. Meanwhile the temperature of a mass of hot water is also acquired. The two substances are then combined in the calorimeter and immediately sealed as to prevent as much heat to escape from the isolated system and into the room. If conducted correctly, the property of heat states that the combined masses of water will seize to maintain either of their original temperatures but rather find a point of equilibrium in which heat is evenly distributed throughout the system. The point of equilibrium will be between the initial temperatures of the two masses of water. As heat is a form of energy, the hot water must lose energy, which is transferred as heat to the cold water. The cold water then receives the internal energy expelled by the hot water system. In this circumstance, the loss and gain of internal energy is recognized by the difference in temperature of the final system compared to the two separate, original system’s temperatures. When calculating the heat gained versus the heat lost, one must also add the difference in heat of the cup itself as it is part of the overall system and contributed to the heat exchange as well. As the principle states, the heat loss of the hot water and the heat gain of the cold water and calorimeter must be approximately equal if one will continue to insist that despite the temperature change, the system conserved all of its original heat. After three trials of the experiment, the results are so staggeringly close that it can be pronounced as conclusive and wholly supports the theory that it was meant to test. The total heat gained of the calorimeter and the cold water is 1.12 x 107 J while the heat lost by the hot water is 1.1 x 107 J. There is a mere 2 x 105 J discrepancy between the results, which is remarkably small and could be easily attributed to numerous external factors or slight errors in the experiment. All

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