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  • Moles
    • number of moles=mass of a substance (g) /relative atomic mass or molecular mass
      • top number
    • A mole is an amount of substance that contains as many particles as there are atoms.
    • Mass= moles x molecular mass
    • number of moles in a gas= the volume of gas/ 24
    • To calculate the number of moles on a concentration
      • number of moles= concentration x volume (dm-3)


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