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9th Class Science Atoms and Molecules Question Bank Atoms and Molecules

  • question_answer
    Find the number of moles of sodium nitrate which contains 1.5 moles of oxygen atoms.

    A) \[0.5\]                             

    B) \[1.5\]

    C) \[2.0\]               

    D)        \[1.0\]

    Correct Answer: A

    Solution :

     \[1\]mole of\[NaN{{O}_{3}}\], contains \[3\] moles o oxygen atoms. \[\therefore \]\[NaN{{O}_{3}}\], containing \[1.5\] moles of oxygen atoms. \[=\frac{1.5}{3}=0.5\]moles


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