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Manipal Medical Manipal Medical Solved Paper-2002

  • question_answer
    8.2 litre of an ideal gas weight 9.0 gm at 300 K and 1 atm pressure. The molecular mass of the gas is:

    A)  9                

    B)  18

    C)  27               

    D)  36

    Correct Answer: A

    Solution :

     We know that \[n=\frac{PV}{RT}\] Or \[\frac{9}{M}=\frac{PV}{RT}\] \[\therefore \] \[\frac{1\times 8.2}{1.082\times 300}=\frac{9}{M}\] \[\therefore \] \[M=\frac{9}{1/3}=27\]


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