The mole allows scientists to calculate the number of elementary entities (usually atoms or molecules ) in a certain mass of a given substance. This can also be written as 6.022×1023 mol-1. The mass of one mole of a substance is equal to that substance's molecular weight.
Why is mole concept important?
1. atoms and molecules are very small and the mole concept allows us to count atoms and molecules by weighing macroscopic amounts of material.
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