A 4-cm-diameter, 0.5-mm-thick spherical container made from BCC iron holds nitrogen at 700 C. The concentration at

Question:

A 4-cm-diameter, 0.5-mm-thick spherical container made from BCC iron holds nitrogen at 700 °C. The concentration at the inner surface is 0.05 atomic percent and at the outer surface is 0.002 atomic percent. Calculate the number of grams of nitrogen that are lost from the container per hour?