A 1-mm-thick sheet of FCC iron is used to contain nitrogen in a heat exchanger at 1200°C.The concentration of N at one surface is 0.04 at% and the concentration at the second surface is 0.005...

A 1-mm-thick sheet of FCC iron is used to contain nitrogen in a heat exchanger at 1200°C.The concentration of N at one surface is 0.04 at% and the concentration at the second surface is 0.005 at%.Determine the flux of nitrogen through the foil in atom N atoms (cm²
.s).