Lab Report Caloric Content of Food Purpose

Students Name regard of Experiment- 11/27/12 Date Report Submitted 11/27/12 Title Caloric subject matter of Food Purpose to be able to measure the energy meat of foods Procedure We are going to take food items and burn them to erupt water to be able to determine the amount of energy a food source can emit. Data Tables Data Table 1 Food Item Observations Food Item Description Marshmallow Peanut / walnut tree Potato Chip plenteousness of food & holder initial 40. 2g 18. 0g 15g Mass of food & holder final 38. 6g 16. 0g 12. g Mass of food destroy 1. 6g 2g 2. 5g Mass of beaker 66. 5g 66. 4g 66. 5g Mass of beaker & water 107. 2g 108. 2g 108. 2g Mass of water 40. 7g 41. g 41. 7g water supply temp. initial 23 C 22 C 22 C Water temp. final 31 C 72 C 32 C Delta T (oC change) 8 C 50 C 10 C Observations The observations are noted above.Found it very interesting that the peanut was able to produce enough heat to change the temperature of the water so much. Questions A. Whi ch of the foods tried and true contains the most energy per gram? The potato chip B. How do your experimentational results compare to published values? I would say that my results were average C. What graphic symbol of reaction is used in calorimetry? Combustion reaction D. What are the products of the reactions? ampere-second dioxide and water E. Where did the products go? They vaporized into the air F.A student performing an experiment to determine the caloric heart of a cashew nut self-collected the following data ?Mass of cashew nut before hot 0. 55 g ?After burning 0. 05 g ?Temp. increase of two hundred g of water 7. 0 oC 1. Calculate the total energy released by the combustion of the cashew nut by using the water temp. increase, the mussiness of the water and specific heat capacity of water. q=delta t x m x cp 58576 joules 2. Calculate the energy released per gram of cashew nut consumed in the reaction. 58,576j/0. 55g= 106502/4. 184= 24,455 or 2. cal 3. Using the fo llowing standards (carbohydrates (4 Cal/g), protein (4 Cal/g), and fats 9 Cal/g), determine the caloric content of a bag of your favorite snack food. Chili cheese fritos Carbs=60 Protein= 8 Fats= 90 Conclusions Remember Lab notes are evidence of your educate and of your understanding of the concepts demonstrated in the experiments. They are also the primary terra firma for your chemistry lab grade. Write neatly and try to express your thoughts clearly, concisely, and all told so that someone else could duplicate your results.