The main goal of metalslab's specific heat was to compare the specific heat of different metals, find the theoretical and experimental values, and describe the heat transfer when the metals transfer heat to the surrounding water at room temperature. We used a few different metals for this experiment. We chose Tin, Copper and Zinc because they would all fit in the containers and their masses were similar. The lab also consisted of some variables and constants. The independent variable was the heat of the boiling water. Alternatively, the dependent variables were the final metal temperature and the ambient water temperature. The constants were the amounts of water in our second and third experiments. Ideally, the amount of water, boiling water, and room temperature should be constant, but as we ran the experiment over multiple days, these became variable. Our calculations used direct measurements to calculate our variables with a thermometer. My hypothesis was that the specific heat of the metals and the final temperatures were directly proportional. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an original essay Equipment Beaker Excel spreadsheet for calculations Thermometer Insulated container for cold water Metal sample Hot plate or heating device for boiling water. Tongs Procedure Use the hotplate to boil water. While it is boiling, fill an insulated container with room temperature water. Place one of the metals into the boiling water until it reaches the same temperature as the boiling water. Place the metal from the boiling water into the room temperature water. Once peak temperature is reached, record the results Record the results for each test when you change metals. Be sure to do multiple tests to ensure consistent and accurate results. Analyze your data to see the relationship between theoretical and experimental values. For each metal, we varied the boiling temperature, room temperature, and amount of water in the container at room temperature. When we performed the tin-specific thermal test, we were only 0.012 Kcal/kg·°C lower than the actual value (22% higher than the theoretical value). For copper we were even closer with a discount of 0.003 Kcal/kg·°C compared to the actual value (3% less than the theoretical). Finally, zinc was much further away at 0.052 Kcal/kg·°C (56% below the theoretical value). Our most accurate calculation was when we tested copper. Our least accurate calculation was when we tested zinc. This shows that our data was more consistent in the first two tests because our data was much more accurate than the values provided. The only reason our study saw a spike in the first study is because we may not have been familiar with the equipment and the important parts that could cause errors. If we had done more tests I think the error rate would have decreased. For the third metal, zinc, we could have rushed or been less careful to get accurate results because we needed to get the data quickly; and/or we could have done a lot of testing that would have helped mediate human errors. Unfortunately, this resulted in poorer data. To calculate the experimental Cp we used the formula,〖Cp〗_metal=Q/〖(End boiling room temp)*M〗_metalTo find Q we used 〖(M〗_(room temp H2O) 〖)(Cp〗_H2O )(Room Temp-End Room Temp) Please note: this is just an example. Get a personalized document from us now.
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