You have been asked to experimentally determine the Calorie (1 Calorie = 1000 ca

Question

You have been asked to experimentally determine the Calorie (1 Calorie = 1000 calories) values of various desserts. You realize that a combustion reaction is analogous to the digestive reaction occurring during metabolism and the amount of energy released from combustion will tell us how much nutritional energy we can expect from the food. You then need to apply the principles of calorimetry to measure the energy released by the desserts upon combustion. After some research, you discover that calorimetry of combustion reactions is performed in an instrument called a bomb calorimeter, which is shown below. The name “bomb” refers to the inner chamber of the calorimeter that can withstand great increases in pressure.

7. Fill in the following blanks for a true statement regarding the heat exchange in the cotton candy calorimeter.

+qwater = ______q_______

Explanation / Answer

+qwater = -qgained by object

Because qnet = qgained by water + qgained by object = 0

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