1.

How many grams of each of the following elements must be taken to get 1 mol of the element ? (a) Sodium (b) Chlorine (C ) Copper

Answer»

Solution :The mass of 1 MOL of an element is its atomic mass EXPRESSED in grams . SINCE the atomic masses of sodium , chlorine and copper are 23 g , 35.5 g and 63.5 g respectively , we get
(a) 23 g (b) 35.5 g(c) 63.5 g


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