How much time is required for the concentration of A to decrease to 2.50 x 10-3 Molar?

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.

i think its 100

i hope this !