# Energy content Cal/g

Objective: The purpose of this experiment is to burn samples of food and experimentally determines their energy content Cal/g.

Introduction: Energy remains an essential element to living beings, humans cannot survive without it.  In order to begin to grasp an understanding of just how much energy is required to allow the human body to operate, we can start by understanding the energy content contained within something as common as a fiery cheeto. Through burning of the food under a calorimeter, temperature can be gauged and the energy content in Cal/g can be quantitatively determined.

Materials

-one soda can                                                      - 50 ml graduated cylinder (+/-.5 ml )

- centigram balance                                            - 1 Cork

-ring stand and iron ring                                     - 1 Paper Clip

-wire mesh                                                          - Foil

-thermometer (+/- .5°C)                                      - samples of Chester’s flaming fries

Procedure:

1. Set up ring stand with wire mesh over the ring.
2. Obtain 1 soda can
3. Obtain 50.0 mL of tap water
4. Pour water into the can
5. Place can on the ring stand.
6. Push the paperclip into the cork so that it can support the sample of food.
7. Cover the paperclip/cork with aluminum foil.
8. Obtain a sample of food
9. Mass the sample of food
10. Use the paperclip to support the sample of food
11. Using the lighter, light the sample of food on fire.
12. Immediately place the burning food sample under the can of water.
13. Determine the temperature change of the water
14. Repeat the procedure as many times as necessary to obtain appropriate data for analysis.
15. Determine the energy content in the food in Cal/g.
16. Using the nutrition information on the back of the package , determine the percent error.

Calculations notes:

*In order to calculate Theoretical energy content 1 oz was considered to be approximately 28.35g

* Note it is assumed that the mass of the water inside the calorimeter did not change throughout the course of the reaction

Conclusion:

The purpose of the Energy Content of Snack Foods lab, was to determine, experimentally the energy content of Chester’s hot fries in Cal/g. During the lab, 5 trials were conducted and quantitative data was gathered from each trial. Through the course of the experiment qualitative data was collected as well. Such observations include the fact that the cheetos changed from their flaming red color to a burnt black color accompanied by a burnt bread smell. Not only that but when holding the paper clip contraption in order to ...