|  |  |  |  |  |  |  |  |  | 
   
    | • | Hydrogen
    reacts with nitrogen to form NH3. 
 |  | 
   
    |  |  | 
   
    |  | 
   
    | • | theoretically  it is should be
    that when 6 g of 
 |  | 
   
    |  | 
   
    |  | hydrogen reacts
    completely with  28 g of nitrogen, 
 | 
   
    |  | 
   
    |  | 34 g of ammonia is formed. 
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    |  | 
   
    | • | However in real
    chemical reactions actual __ g of 
 |  | 
   
    |  | 
   
    |  | hydrogen reacting
    with __ g of nitrogen,  __ g of 
 |  | 
   
    |  | 
   
    |  | ammonia is
    produced need be experimentally 
 |  | 
   
    |  | 
   
    |  | determined. 
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