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A measure of the number of particles of a substance in a given volume
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A measure of the number of particles of a substance in a given volume

User Rost
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The SI unit for amount of substance is the mole. It has the unit symbol mol. The mole is defined as the amount of substance that contains an equal number of elementary entities as there are atoms in 12g of the isotope carbon-12.
User Taha Zgued
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