How does concentration of the blue particles on side a compare a that of side b?

To compare the concentration of blue particles on side A with that of side B, you would need to assess the number of blue particles per unit volume or area on each side. If side A has a higher number of blue particles per unit than side B, then it has a greater concentration, and vice versa. If the concentrations are equal, then the distribution of blue particles is uniform between the two sides.