what is meant by mole of a substance? Explain with example .
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A mole corresponds to the mass of asubstance that contains 6.023 x 1023particles of the substance. The mole is the SI unit for the amount of a substance. Its symbol is mol. By definition: 1 mol of carbon-12 has a mass of 12 grams and contains 6.022140857 x 1023 of carbon atoms (to 10 significant figures).Examples.
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