JCECE Engineering JCECE Engineering Solved Paper-2003

  • question_answer
    \[720\,\,g\] water contain the number of moles:

    A) \[2\]                                     

    B) \[190\]

    C)  \[40\]                                  

    D)  \[55\]

    Correct Answer: C

    Solution :

    Key Idea: Number of moles\[=\frac{mass}{molecular\,\,mass}\] Given mass of\[{{H}_{2}}O=720\,\,g\] \[\therefore \]Moles of water\[=\frac{720}{18}=40\]


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