Answer
$T=1.6\times 10^5K$
Work Step by Step
We know that;
$T=\frac{2gR_eM}{3R}$
For Oxygen, $M=32\times 10^{-3}\frac{Kg}{mol}$.
We plug in the known values to obtain:
$T=\frac{2(9.8)(6.37\times 10^6)(32\times 10^{-3})}{3(8.31)}=1.6\times 10^5K$
