1. With the help of a neat diagram explain the working of a calorimeter .
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1. With the help of a neat diagram explain the working of a calorimeter .
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The principle of calorimetry (or principle of mixtures) states that for an insulated system, heat energy lost by the hot body is equal to the heat energy gained by the cold body. Note: Heat transfer occurs until both the bodies attain the same temperature(t).
Answer:
1. A calorimeter is a device used to measure the amount of heat gained or lost by a substance.
2. It consists of a vessel made up of metals like copper or aluminium which are good conductors of heat and electricity.
3. The metallic vessel is kept in an insulating jacket to prevent heat loss to the environment
4. There are two holes in it. Through one hole a thermometer is inserted to measure the temperature Of the Contents.
5. A stirrer is inserted through another hole for stirring the content in the vessel.
6. The vessel is filled with liquid which is heated by passing current through the hating element.
7. Using this device we can measure the heat capacity of the liquid in the container