# Expirment 2 Calorie Content

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Morgan Stanley Experiment 7: Calorie Content of Food Report submitted:3/9/2013 Title: Calorie Content of Food Purpose: To measure the energy content of various food items and to become familiar with energy units like calories and joules. Procedure: measure the energy content of a variety of foods by burning a portion of food and capturing the heat released to a known mass of water in a calorimeter and identify units of measuring heat such as calories and joules. Data: | Marshmallow | Peanut | Popcorn | Food Item Description | Small &amp; White | Small &amp; Salted | Extra Butter | Mass of food &amp; holder – initial | 15.2 | 17.3 | 14.9 | Mass of food &amp; holder – final | 13.7 | 12.5 | 11.4 | Mass of food burnt | .70g | .5g | 0g | Mass of beaker | 4.2 | 4.2 | 4.2 | Mass of beaker &amp; water | 54.2 | 54.2 | 54.2 | Mass of water | 39.9 | 42.6 | 44.83 | Water temp. – initial | 48 | 45 | 47 | Water temp. – final | 36 | 33 | 46 | Delta T (oC change | 12C | 12C | 1 C | Questions: A. Which of the foods tested contains the most energy per gram? Peanut B. How do your experimental results compare to published? They were not the same, they actually were completely different. I thought they would be more, but its actually less. C. What type of reaction is used in calorimetry? Chemical Reaction. D. What are the products of the reactions? Gas E. Where did the products go? Into the air F. A student performing an experiment to determine the caloric content of a cashew nut collected the following data:  Mass of cashew nut before burning: 0.55 g  After burning: 0.05 g  Temp. increase of 200 g of water: 7.0oC 1. 5880J at 4.2 J/cal 2. 10.69kJ/gm 3. 12 Grams Conclusion: After doing the expirement I realized that the calories in some of