Dunno the answer.. ¯\_(ツ)_/¯ What information can you infer from the Lewis structure diagram shown below?

A. Boron has six valence electrons.
B. Oxygen has six valence electrons.
C. Boron has five valence electrons.
D. Oxygen has five valence electrons.

Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.