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BCECE Engineering BCECE Engineering Solved Paper-2005

  • question_answer
    2 g of \[{{O}_{2}}\] at\[~27{{\,}^{o}}C\] and 760 mm of Hg pressure has volume:                         

    A) 1.4 L                                      

    B) 2.8 L

    C) 11.2 L                    

    D)        22.4 L

    Correct Answer: A

    Solution :

    Key Idea: Molecular mass in gram = 22.4 L at STP. Given mass of \[{{O}_{2}}=2g\]at \[27{{\,}^{o}}C\]and 760 mm Hg \[32\text{ }g\text{ }of\text{ }{{\text{O}}_{2}}=22.4\text{ }L\]at STP \[\therefore \]  \[2g\]of \[{{O}_{2}}\]\[=\frac{22.4}{32}\times 2=1.4\,L\]


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