In a charcoal-water-unknown mixture, this must be boiled in opposition because the coal is insoluble, and with the heated mixture the coal can be removed.
It is used in the chemical sciences as a technique used to purify chemicals by heating materials to temperatures above the crystallization of each compound.
Therefore, when a component is heated, the impurities are dissolved and can be removed from the solution, generating the purification of the compound.
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