Hand Warmer Project
For this project, our groups were assigned to make the most efficient hand warmer. Our prototype was required to increase in temperature by 20 degrees Celsius, while being cost efficient and safe. To produce our hand warmer, we tested different types of salt their influence on the change of temperature. From our date we concluded that calcium chloride was the most efficient. We also calculated the solution's enthalpy, the calorimeter constant, how much energy was lost, and how much calcium chloride we needed in grams. These calculations, in addition with background information, data tables, design of the prototype, and cost analysis, can be found in the presentation below.
I enjoyed doing this project. Although, it was hard to grasp the concept of it all into science and making it work. I felt a little as if we were rushing some ways through our project, but it ended up working out. I believe our group pulled together in the end but throughout the process it was a little skeptical. We did manage our time well though. Near the end we pulled together. While presenting we all had a good stance on what each of us had to say. This project went well and I am happy with the result.