2. Questions Bank
  3. 9th Class
  4. Science
  5. Atoms and Molecules

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

  • question_answer
    Calculate the number of moles present in \[17\] grams of\[AgN{{O}_{3}}\].

    A)  \[0.2\] moles     

    B)         \[0.1\] mole  

    C)  \[2\] moles      

    D)         \[1\] mole

    Correct Answer: B

    Solution :

     Gram molecular weight of\[AgN{{O}_{3}}\]             \[=(1\times 108+1\times 14+3\times 16)\]             \[=108+14+48=170\,\,g\] Number of moles of\[AgN{{O}_{3}}\]             \[\frac{17\,\,g}{170\,\,g}=\frac{1}{10}=0.1\]mole


You need to login to perform this action.
You will be redirected in 3 sec spinner