Nitrogen from a gaseous phase is to be diffused into pure iron at 700°C. If the surface concentration is maintained at 0.21 wt% N, what will be the concentration (in weight percent) 4.0 mm from the surface after 8.9 h? The diffusion coefficient for nitrogen in iron at 700°C is 3.2 x 10 10 m2/s. erf(z) erf(z) erf(z) 0.00 0.0000 0.55 0.5633 1.3 0.9340 0.025 0.0282 0.60 0.6039 1.4 0.9523 0.05 0.0564 0.65 0.6420 1.5 0.9661 0.10 0.1125 0.70 0.6778 1.6 0.9763 0.15 0.1680 0.75 0.7112 1.7 0.9838 0.20 0.2227 0.80 0.7421 1.8 0.9891 0.25 0.2763 0.85 0.7707 1.9 0.9928 0.30 0.3286 0.90 0.7970 2.0 0.9953 0.35 0.3794 0.95 0.8209 2.2 0.9981 0.40 0.4284 1.0 0.8427 2.4 0.9993 0.45 0.4755 1.1 0.8802 2.6 0.9998 0.50 0.5205 1.2 0.9103 2.8 0.9999 0.783 weight percent

I need these three parts answered, if you are unable to answer all three parts please leave it for another tutor to answer, thank you.

Topic/s: Force System of a Force, Moment of a Force, Moment of a Force-Scalar Formulation,Moment of a Force-Vector Formulation, and Principle of Moment.   Reminder: Kindly show the complete step-by-step solution. Please make sure that your handwriting is understandable and the picture of the solution is clear. I will rate you with “like/upvote” after.   Thank you.

Can someone please help me to solve the following question following all instructions and drawing needed table and diagrams and showing all work neatly. Please and Thank you!!