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  5. Atoms and Molecules

9th Class Science Atoms and Molecules

  • question_answer 25)
    Calculate the number of aluminium ions present in 0.051 g of aluminium oxide. (Hint: The mass of an ion is the same as that of an atom of the same element. Atomic mass of Al = 27 u)  

    Answer:

    Molar mass of 102 g of  contains  ions    0.051 g of  contains    ions.  


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