Calculate the root mean square velocity of $\mathrm {CO_2}$ molecule at $\mathrm {1000^°C.}$

$\mathrm {84985 ~ m ~ sec^{-1}}$

$\mathrm {849.85~ m ~ sec^{-1}}$

$\mathrm {753.23 ~ m ~ sec^{-1}}$

$\mathrm {754.23~ m ~ sec^{-1}}$