(Solved): Hydrogen peroxide decomposes into water and oxygen in a first-order process. H2O2(aq)H2 ...

Hydrogen peroxide decomposes into water and oxygen in a first-order process. ${\mathrm{H}}_2{\mathrm{O}}_2(\mathrm{aq})\to {\mathrm{H}}_2\mathrm{O}(\ell )+1/2{\mathrm{O}}_2(\mathrm{g})$ At $20.0^{\circ }\mathrm{C}$, the half-life for the reaction is $3.92\mathrm{E}+4$ seconds. If the initial concentration of hydrogen peroxide is $0.947\mathrm{M}$, what is the concentration after 3.29 days? $6.22\mathrm{E}-2\mathrm{M}$ $144\mathrm{M}$ 6.56E-3 M 6.22E-3 M 6.22E-4 M