7.19 During carbon dioxide arc welding, carbon and oxygen from the coz enter into solution in iron at 1600C (1873 x) according to (CO2) - [CJFe,wt% + 2[0]fe,wt% AGO = 43,855 - 11.4T cal (183,489 - 47.70 T J). The final oxygen content of the weld is represented by 10g[% 0] . 6320 + 2.734. T Calculate the equilibrium carbon content of the weld if the partial pressure of Co, is 1 atm (101325 N/m). Assume the following interaction parameter values -0.13, -0.1 & = -0.2, and = 0.22