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Q 9.     What is the mass of:

  (a)     0.2 mole of oxygen atoms? 

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 The mass of 1 mole of oxygen atoms = 16 g

 The mass of 0.2 mole of oxygen atoms = 0.2 x 16 g

                                                                = 3.2 g

Posted by

Pankaj Sanodiya

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