320326 The activity of an old piece of wood is just \(25 \%\) of the fresh piece of wood. If \({{\text{t}}_{1/2}}\) of \(\mathrm{C}-14\) is \(6000\,{\text{yr}}\), the age of piece of wood is

320327 Find out time period of \({{\rm{I}}^{{\rm{st}}}}\) order reaction when reaction complete \(2/3\,{\rm{rd}}\), if the value of rate constant is \(4.3 \times 10^{-4} \mathrm{~s}^{-1}\)

320328 For a first order reaction \(\mathrm{A} \rightarrow\) Products, initial concentration of \(\mathrm{A}\) is \(0.1 \mathrm{M}\), which becomes \(0.001 \mathrm{M}\) after 5 minutes. Rate constant for the reaction in \(\mathrm{min}^{-1}\) is

320329 If \({\mathrm{80 \%}}\) of a radioactive element undergoing decay is left over after a certain period of time \({\mathrm{t}}\) from the start, how many such periods should elapse from the start for just over \({\mathrm{50 \%}}\) of the element to be left over?

320326 The activity of an old piece of wood is just \(25 \%\) of the fresh piece of wood. If \({{\text{t}}_{1/2}}\) of \(\mathrm{C}-14\) is \(6000\,{\text{yr}}\), the age of piece of wood is

320327 Find out time period of \({{\rm{I}}^{{\rm{st}}}}\) order reaction when reaction complete \(2/3\,{\rm{rd}}\), if the value of rate constant is \(4.3 \times 10^{-4} \mathrm{~s}^{-1}\)

320328 For a first order reaction \(\mathrm{A} \rightarrow\) Products, initial concentration of \(\mathrm{A}\) is \(0.1 \mathrm{M}\), which becomes \(0.001 \mathrm{M}\) after 5 minutes. Rate constant for the reaction in \(\mathrm{min}^{-1}\) is

320329 If \({\mathrm{80 \%}}\) of a radioactive element undergoing decay is left over after a certain period of time \({\mathrm{t}}\) from the start, how many such periods should elapse from the start for just over \({\mathrm{50 \%}}\) of the element to be left over?

320326 The activity of an old piece of wood is just \(25 \%\) of the fresh piece of wood. If \({{\text{t}}_{1/2}}\) of \(\mathrm{C}-14\) is \(6000\,{\text{yr}}\), the age of piece of wood is

320327 Find out time period of \({{\rm{I}}^{{\rm{st}}}}\) order reaction when reaction complete \(2/3\,{\rm{rd}}\), if the value of rate constant is \(4.3 \times 10^{-4} \mathrm{~s}^{-1}\)

320328 For a first order reaction \(\mathrm{A} \rightarrow\) Products, initial concentration of \(\mathrm{A}\) is \(0.1 \mathrm{M}\), which becomes \(0.001 \mathrm{M}\) after 5 minutes. Rate constant for the reaction in \(\mathrm{min}^{-1}\) is

320329 If \({\mathrm{80 \%}}\) of a radioactive element undergoing decay is left over after a certain period of time \({\mathrm{t}}\) from the start, how many such periods should elapse from the start for just over \({\mathrm{50 \%}}\) of the element to be left over?

320326 The activity of an old piece of wood is just \(25 \%\) of the fresh piece of wood. If \({{\text{t}}_{1/2}}\) of \(\mathrm{C}-14\) is \(6000\,{\text{yr}}\), the age of piece of wood is

320327 Find out time period of \({{\rm{I}}^{{\rm{st}}}}\) order reaction when reaction complete \(2/3\,{\rm{rd}}\), if the value of rate constant is \(4.3 \times 10^{-4} \mathrm{~s}^{-1}\)

320328 For a first order reaction \(\mathrm{A} \rightarrow\) Products, initial concentration of \(\mathrm{A}\) is \(0.1 \mathrm{M}\), which becomes \(0.001 \mathrm{M}\) after 5 minutes. Rate constant for the reaction in \(\mathrm{min}^{-1}\) is

320329 If \({\mathrm{80 \%}}\) of a radioactive element undergoing decay is left over after a certain period of time \({\mathrm{t}}\) from the start, how many such periods should elapse from the start for just over \({\mathrm{50 \%}}\) of the element to be left over?