Consider a sheet of iron which is maintained in an atmosphere filled with nitrogen and is permitted to achieve a steady state diffusion. The thickness of the sheet is 6.5 mm. The diffusion coefficient of nitrogen in iron is 1.9×10 m²/s at 675°C. If the concentration 3kg/m³ and the diffusion flux is on the high-pressure side of the plate is 1.7×10 kg/m² s.Determine the concentration on the low-pressure side of the plate if the depth of concentration of low-pressure side is 0.001 m. A) 3.2 kg/m³ B) -3 kg/m³ C) 2.1 kg/m³ D) 0.001 kg/m³