The precipitation of nickel (ⅱ) acetate and manganese (ⅱ) bromide
In the past year, there was a wonderful thing about the combination of sorcerers who were good at researching pharmaceuticals. One day, the sorcerer was in the alchemy room and placed a vessel, which contained nickel (ⅱ) acetate solution, and manganese (ⅱ) bromide, in order to study the phase of the two.

At the beginning, the manganese (ⅱ) bromide was gradually incorporated into the nickel (ⅱ) acetate solution. The solution was slightly blue, the color changed slightly, and something seemed to be moving inside. Suddenly, there was a gradual precipitation, which was like a flocculent at the beginning, floating in the liquid. After a while, the precipitation gradually gathered, the color was dull, and it settled at the bottom of the vessel.

The sorcerer stared, observed the precipitation, thought about its structure, and studied its nature. Between the knowledge and chemical combination, the ions are combined to form this new substance. The quality of its precipitation may be specific, and it may be used for various purposes, or it may be available. Then the changes are recorded in detail, and they are written down in simple slips. I hope that later researchers will be able to explore and understand it because of it. In the study of pharmaceutical chemical synthesis, it will be more advanced.