(Solved): The gas phase decomposition of hydrogen peroxide at 400C H2O2(g)H2O(g)+1/2O2(g) i ...

The gas phase decomposition of hydrogen peroxide at $400^{?}\mathrm{C}$ ${\mathrm{H}}_2{\mathrm{O}}_2(g)?{\mathrm{H}}_2\mathrm{O}(g)+1/2{\mathrm{O}}_2(g)$ is second order in ${\mathrm{H}}_2{\mathrm{O}}_2$ with a rate constant of 0.650 $\frac{1}{\mathrm{M}?\mathrm{s}}\text{. }$ If the initial concentration of ${\mathrm{H}}_2{\mathrm{O}}_2$ is $0.0900\mathrm{M}$, the concentration of ${\mathrm{H}}_2{\mathrm{O}}_2$ will be $\mathrm{M}$ after 46.9 seconds have passed. 9 more group attempts remaining