1. (5 pts) Gold (Au: atomic number = 79; molar atomic mass = 196.97) crystallizes in a cubic packed structure (the face-centered cube) and has a density of 19.3 g/cm3 . Calculate the atomic radius of gold. 2. (5 pts) Write the colligative properties of an electrolyte solution. 3. (5 pts) Calculate the pH of a 0.10 M solution of sodium acetate (CH3 COONa). What is the percent hydrolysis?...........