The purpose of this lab was to find the Calories per gram when burning different food items while using the concepts of specific heat. The calculations done to find the Calories per gram was to find the mass of the food burned, which was the initial-final mass of food. Then, we figured out the change in temperature. Next, we used the equation q=mass x C x change in temperature to figure out the number of calories. From this we divided by 1000 calories to get Calories with the upper case C as the difference between calories and Calories is that Calories have 1000 of calories. Finally, we divided the number of Calories by the mass of the food burned to get our Calories per gram.
Questions
1. We measured the temperature change in the water.
2. We measured the energy released by the food sample.
3. The small amounts of energy escape through the sides of the can.
4. I was surprised by the results for the pecan. This was because the energy released by the pecan was very significant, but we did not get a large Calorie per gram. I was also surprised by the cashew's results as it did not burn that long.
Data and Calculations
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