State the principle of colorimeter.
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The colorimeter is based on Beer-Lambert's law, according to which the absorption of light transmitted through the medium is directly proportional to the medium concentration. To determine the concentration of an unknown sample, several sample solutions of a known concentration are first prepared and tested.
Vinaykadam45:
hii
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Heya Mate ur answer is...
Heat lost by hot object = Heat gained by cold body. It is the principle of calorimetry
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