With the increasing concerns to health the calorie content o

With the increasing concerns to health, the calorie content of the meal has become an important factor affecting customer\'s decision in restaurant. The calorie content of food is usually measured using the bomb calorimeter. Write a short essay (with a maximum length of ONE page, using Times New Roman, 12 point, single space, ) about the operation principle of the bomb calorimeter, its operation procedure, and list the calories of at least 5 meals sold in fast food chain restaurants such as McDonalds. Burger King. Subway, or others. You may use picture. Figure, and table in your answers. (Remember \"no hand \" writing, please type your essay and print it out with a computer)

Solution

The fundamental principle of this apparatus is the direct determination
of the volume of oxygen required to burn a known
weight of a substance and the computation therefrom of the potential\'energy
of the substance, based upon a series of factors for
the calorific value of a liter of oxygen previously established by
combustion of similar material in a bomb calorimeter. In a pure
substance, such as sucrose, the amount of oxygen involved in the
combustion of 1 gm. can readily be computed. Since the heat of
combustion is accurately known, the calorific value of each liter
of oxygen can be calculated.

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500 CALORIES - 2 Crunchy Tacos (300) / Mexican Rice (200)

500 CALORIES - Whopper Jr. Sandwich, without mayo (240) / Quaker Oatmeal (170) / Garden Side Salad (60) / Apple Slices (30) - KINGBURGER

500 CALORIES - Grilled Chicken Wrap (270) / 4-Piece Chicken Nuggets (230) - WINDEY\'S

500 CALORIES - Chicken Stars, 9 piece (390) / Garden Side Salad (110) - CARL\'S JR