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Bomb calorimeter

Bomb calorimeter
An instrument which measures the heat released or absorbed during a chemical reaction.
It is used for determining the potential energy of organic substances, including those in foods. It consists of a hollow steel container, lined with platinum and filled with pure oxygen, into which a weighed quantity of substance is placed and ignited with an electric fuse; the heat produced is absorbed by water surrounding the bomb and, from the rise in temperature, the calories liberated are calculated.


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