BBC1 年
The mole and Avogadro's constant - OCR Gateway
1 mol is the amount of substance that contains the same number of particles as there are atoms in 12.0 g of carbon-12.
BBC1 年
Avogadro constant and moles - OCR Gateway
1 mol is the amount of substance that contains the same number of particles as there are atoms in 12.0 g of carbon-12.