Question
Thu August 21, 2008 By:

calculate the mass of Mg.................

Expert Reply
Fri August 22, 2008

23 g of Na contains = 6.023 x 1023atoms

1gof Na contains = 6.023 x 1023/ 23atoms

2.3gof Na contains = 6.023 x 1023/ 23atoms  X 2.3

                                   =6.023x 1022atoms  = Mg atoms

so, if 6.023x 1023atoms  have =24 g

        in       6.023x 1022atoms mass = 24 x      6.023x 1022atoms / 6.023 x 1023

                                                               = 2.4g

                                    

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