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d)  4 atoms
               Q5     The  atomic  mass  of  sodium  is  23.  The  number  of  moles  in  46  g  of  1
                      sodium are

                          a)  1
                          b)  2
                          c)  2.3
                          d)  4.6

               Q6     Mass of 1 mole of a substance is called its formula mass.( True/False)         1
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