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 \[60\,\,g\] of\[NaOH\].

    A)  \[1.2\] moles    

    B)         \[1.5\] moles  

    C)  \[2.5\] moles       

    D)         \[0.15\] moles

    Correct Answer: B

    Solution :

     Gram molecular weight of\[NaOH=23+\]\[16+1=40\,\,g\] Number of moles in \[60\,\,g\] of\[NaOH\]\[=\frac{60}{40}=1.5\]moles


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