The average translational kinetic energy of $N _ { 2 }$ gas molecules at $\_\_\_\_$ ${ } ^ { \circ } \mathrm { C }$ becomes equal to the K.E. of an electron accelerated from rest through a potential difference of 0.1 volt.\\
(Given $k _ { B } = 1.38 \times 10 ^ { - 23 } \mathrm {~J} \mathrm {~K} ^ { - 1 }$) (Fill the nearest integer).