The average translational kinetic energy of oxygen molecules is 0.05 eV. Calculate  the temperature of the oxygen. Use $\text{1eV}=\text{1}.\text{6}\times \text{1}{0}^{–\text{19}}\text{J}$.Boltzmann’s constant,  $k=\text{1}.\text{38}\times \text{1}{0}^{–\text{23}}{\text{J K}}^{–\text{1}}$ .

• A

  300 K

• B

  386 K

• C

  420 K

• D

  475 K