3) If (Ji)V and (Ji)M denote the diffusion fluxes in moles /cm2-s in volume fixed frame and mass fixed frame of reference respectively and (D)V and (D)M are the diffusion coefficients in cm2/s in these frames of reference, derive the relation for (Ji)M in terms of (D)V and gradient of concentration expressed in weight fraction. Assume that the partial molar volumes and partial molar masses of individual elements are constant. However the density and molar volume of the alloy vary with composition