(a) how much fe2+ (expressed in mol liter' could be present ina soluti ,? on without causing precipitation of feco the solubility product of feco, is ko 101o 2+ (b) how would this maximum soluble fe concentration change on lowering the ph of that solution by 1 unit?

Can someone me with questions 12 and 13 plz.

The image shows a process that releases nuclear energy which statement best identifies the process shown the process must be fusion because energy is released the process must be fusion because of have your nucleus formed a smaller nuclei the process must be fission because a large nucleus breaks into smaller nuclei the process must be fission because neutrons are formed

This drawing shows a human body system. what is the primary function of this body system?