Energy Content Of A Food Sample

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The purpose of this experiment is to measure the energy content of a food sample and to determine the efficiency of a calorimeter.

1. 100 ml distilled water
2. A test tube
3. 1 almond
4. Calorimeter
5. A paperclip
6. A small aluminum foil dish
7. A scale
8. A graduated cylinder
9. A flask
10. Tongs
11. Safety glasses.
12. Lighter

Method: The first step was to push a single almond onto the end of a partially straightened paperclip. And then we set the scale to zero, place a weighing dish and the almond/paper clip on the scale to record the total mass (weight). Secondly, we measure out 100 ml of distilled water from the water bottle and pour it into the flask. Place the flask stopper with thermometer inserted into the neck of the flask. The place the neck of the flask through the hole in the calorimeter lid and rotate a quarter turn. Then we measure and record the initial temperature of the water. (We record it after leave the thermometer in the water for a while before reading the temperature.) Next, we position the weighing dish in front of the calorimeter and put on safety glasses to light the almond. After a while, when the almond catches fire, carefully position the paperclip with the burning almond on the weighing dish. The set up should be such that any ash or broken pieces of almond will fall onto the weighing dish. Then carefully slide the weighing dish with the burning almond into the calorimeter so that the

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