97%2:09 Preparation of tri(acetylacetonato)cobalt(II) complex A mixture of COCO3 and 20 mL of 99% acetylacetone (Hacac, d = 0.975 g/mL) is heated with a steam bath to approximately 85 C. Then, 30 mL of 30% H202 (d = 1.11 g/ml) is added drop wise to the mixture. The mixture change its color to green. The beaker is cooled in an ice bath. The precipitated solid is filtered under vacuum. The sample were dried in an oven to 110 C. the mass of the product was 6.0 g. Hint: Review the chemistry of acetylacetone ligand (Hacac) from the first part of the course to recognize the structure and it chemistry Question 2 2 pts What would be the coordination number of the complex