The gas ammonia (A) is diffusing at steady state through N2 (B) by equimolar counter diffusion in a conduit 1.22 m long at 25°C and a total pressure of 101.32 kPa abs. The partial pressure of ammonia at the left end is 25.33 kPa and at the right end, 5.066 kPa. The cross section of the conduit is in the shape of an equilateral triangle, with the length of each side of the triangle being 0.0610 m at the left end and tapering uniformly to 0.0305 m at the right end. Calculate the molar flux of ammonia. The diffusivity is 0.230 x 10-4 m2/s