1. Determine the diffusivity of Carbon (C) in Iron (Fe) at 1200 C. R = 8.31 J/mol-K (3 Sig figs, units of m^2/s)
2. A tube is carrying a highly corrosive gas at a concentration of 0.5 kg/m^3. The diffusivity of this gas through the tube is 4.7E-8 m^2/s. The pipe wall is 0.4mm thick. Determine the flux through the pipe wall in units of kg/m^2-s. (3 sig figs)
3. If the pipe in the last problem (2) is 100 m long and has a diameter of 20 mm, how much of the corrosive gas will escape in 24 hours? (kg, 3 sig figs)
