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

  • question_answer
    How many moles are present in \[540\,\,g\] of glucose\[({{C}_{6}}{{H}_{12}}{{O}_{6}})\]?

    A)  \[2\]moles        

    B)         \[3\]moles  

    C)  \[4\]moles        

    D)         \[1\]mole

    Correct Answer: B

    Solution :

     Formula of glucose\[={{C}_{6}}{{H}_{12}}{{O}_{6}}\] Molecular weight\[=180\,\,a.m.u.\] One mole gram glucose\[=180\,\,g\] \[180\,\,g\] of glucose contains \[1\] mole of glucose \[540\,\,g\]of glucose contains \[=\frac{1}{180\,\,g}\times 540\,\,g=3\]moles


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