Calculate the concentration of ammonium ion that is required to prevent the precipitation of Cu(OH)2 in a solution with [Cu2+]=0.10 M and [NH3]=5.0×10−6 M. Cu(OH)2(s)NH3(aq)+H2O(l)↽−−⇀Cu2+(aq )+2OH−(aq)Ksp=2.0×10−19↽−−⇀NH+4(aq) +OH−(aq)Kb=1.8×10−5

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory

8. what happens to matter during a chemical reaction

28. which is not a reason that water is used to store spent fuel rods from nuclear power plants? water increases the speed of the chain reaction in the fuel rods. water protects nuclear power plant workers from the high temperature and radiation of the fuel rods. water acts as a radiation shield to reduce the radiation levels. water cools the spent rods. salts action