2.) Determine the concentration of citric acid if a 20.00 mL sample is titrated with 29.06 mL of 0.385 M sodium hydroxide. (10 points)
C, H,O(COOH)2 (aq) + 3 OH' (aq) - C, H,O(COO), (aq) + 3 H20 (1) (net-ionic reaction)

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.

a:

by the combination of an unlimited number of elements