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9th Class Science Structure of the Atom Question Bank Nature of Matter

  • question_answer
    How many gms of \[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\]are present m 0.25 mole of \[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\]?

    A)  0.25                      

    B)         25.00

    C)  24.50                     

    D)         2.45

    Correct Answer: C

    Solution :

     Mol. weight of \[{{H}_{2}}S{{O}_{4}}=98\] Since, \[1\]mole of \[{{H}_{2}}S{{O}_{4}}\] contains\[98\,\,gm\] \[\therefore \]\[0.25\] mole of \[{{H}_{2}}S{{O}_{4}}\] contains \[=98\times 0.25\]                                                                 \[\mathbf{=24}\mathbf{.50}\,\,\mathbf{gm}\]


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