=. soluble. ammonium phosphate, (NH 4) 3 PO 4, is soluble. +. any other cation. =. low solubility (insoluble). magnesium carbonate, MgCO 3, is insoluble. 1  All compounds of the ammonium ion (NH 4 +), and of Alkali metal (Group IA) cations, are soluble. 2  All nitrates and acetates (ethanoates) are soluble. 3  All chlorides, bromides and iodides are soluble EXCEPT those of silver, lead and mercury(I).
The period of the Warring States (Zhanguo or Chan-Kuo) refers to the era of about 475 BCE to 221 BCE. It commenced at a time of when the numerous petty city-state kingdoms of the Spring and Autumn period had been consolidated into seven major contenders and a few minor enclaves. The above map shows a delineation of the states.
In 221 BC, Qin conquers Qi, completing the unification of China, and ushering in the Qin Dynasty. The Warring States Period takes place from sometime in the 5th century BC to the unification of China by Qin in 221 BC.The date for the beginning of the Warring States Period is somewhat in dispute.n 221 BC, Qin conquers Qi, completing the unification of China, and ushering in the Qin Dynasty. The Warring States Period takes place from sometime in the 5th century BC to the unification of China by Qin in 221 BC.