Find the diffusivity of AB in sq.m/sec if N flux of A 5 mol/sq.m sec, concentration difference is 2mol/cu.m and distance is 3 m.

Find the diffusivity of AB in sq.m/sec if N flux of A 5 mol/sq.m sec,

1.	Find the diffusivity of AB in sq.m/sec if N flux of A 5 mol/sq.m sec, concentration difference is 2mol/cu.m and distance is 3 m.
A.	2.5
B.	5.5
C.	7.5
D.	10.5
Answer» D. 10.5