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[" 4.For the first order reaction,"],[" A(g) "rarr2B(g)+C(g)" the initial pressure "P_(A)=90mm" .Hg,the pressure after "10" minute is found to be "180mm],[" Hg.The rate constant of the reaction is "],[[" (1) "1.15times10^(-3)sec^(-1)," (2) "2.3times10^(-3)sec-^(-1)," (3) "3.45times10^(-3)sec^(-1)," (4) "4.6times10^(-3)sec^(-1)]]

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