=. 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.
The Warring States period resembles the Spring and Autumn period in many ways. The multi- state. structure of the Chinese cultural sphere continued as before, and most of the major states of the. earlier period continued to play key roles. Warfare, as the name of the period implies, continued to. be endemic, and the historical chronicles continue to read as a bewildering list of armed conflicts. and shifting alliances. In fact, however, the Warring States period was one of dramatic social and. political changes.