Manipal Engineering Manipal Engineering Solved Paper-2011

  • question_answer
    The largest number of molecules is in

    A) \[36\,\,g\]of water

    B) \[28\,\,g\]of\[C{{O}_{2}}\]

    C) \[46\,\,g\]of\[C{{H}_{3}}OH\]

    D) \[58\,\,g\]of\[{{N}_{2}}{{O}_{5}}\]

    Correct Answer: A

    Solution :

    \[36\,\,g\]of water\[=\frac{36}{18}=2\,\,mol\] \[28\,\,g\]of\[C{{O}_{2}}=\frac{28}{44}=0.64\,\,mol\] \[46\,\,g\]of\[C{{H}_{3}}OH=\frac{46}{32}=1.44\,\,mol\] \[58\,\,g\]of\[{{N}_{2}}{{O}_{5}}=\frac{58}{108}=0.54\,\,mol\]


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