56        32    1     1                           1    6.0238×10²³                    10²³            10²                 —12     2×10       12    
                12      144      6.0238×10²³         A   Arogadro                                                       2  5                                      
                                                
     ＝  
                                                
             
  ＝
                
                                   
 
                                                                                 
                                                                                            
           J                                             
                                                                                                                     
                                  
            1                                           1       6.0238×10²³                  
    
                              reactant
                            product
                             Law of conservation of mass
                            Law of definite proportions
                                Law of multiple proportions
                               Dalton,s atomis theory
                                              Compound
                                          mixture
                                  formala empirical
                                     equation, chemical
                                             coefficient
                                        atomic weight
                               formula weight
                           gram—formula weight
                                              mole
                              Avogardros nunber