Given are the following four containers.

(I) ${\mathrm{H}}_2\left(\mathrm{g}\right)$

(II) $\mathrm{He}\left(\mathrm{g}\right)$

(III) $N_2\left(g\right)$

(IV) ${\mathrm{O}}_2\left(\mathrm{g}\right)$

Each container contains the same mass of the indicated gas at the same T ( = 300 K). Based on this information, answer the questions given below.

If the temperature of the container IV is changed so as to have root mean square speed of its gaseous molecules identical to that of gaseous molecules in container III, the temperature of the gas in container IV should be increased/decreased to