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C4 Stoichiometry - Coggle Diagram

- - - - Example Mg Ar = 24. Oxygen Ar = 16. The Mr of MgO = 40g
  - - - One mole of a substance has a mass equal to the Mr
- - - - Example: Magnesium oxide
        
        Mg - Valency of 2. O - Valency of 2
        
        Swap them over, in this case itll be cancelled out due to similar valency
    - - K - Valency of 1. O - Valency of 2
        
        Swap them over the equation will be K2O