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Write the skeleton equation for the following word equation and then balance them.
 
a.  Carbon + Oxygen → Carbon dioxide
 
Skeleton equation  =
Balanced equation =
  
b. Phosphorus + Chlorine → Phosphorus pentachloride
 
Skeleton equation  = 
Balanced equation =
 
c. Sulphur + Oxygen → Sulphur dioxide
 
    Skeleton equation  =
    Balanced equation =
 
d. Magnesium + hydrogen chloride → Magnesium chloride + Hydrogen
 
Skeleton equation  =
Balanced equation =