What concentration of the lead ion, Pb2+Pb2+, must be exceeded to precipitate PbCl2PbCl2 from a solution that is 1.00×10−21.00×10−2 MM in the chloride ion, Cl−Cl−? KspKspK_sp for lead(II) chloride is 1.17×10−51.17×10−5 .

Asample of ammonia reacts with oxygen as shown. 4nh3(g) + 5o2(g) 4no(g) + 6h2o(g) what is the limiting reactant if 4.0 g of nh3 react with 8.0 g of oxygen? o2 because it produces only 0.20 mol of no. nh3 because it produces only 0.20 mol of no. o2 because it produces two times less no than nh3. nh3 because it produces three times more no than o2.

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

Which change to the system wood cause the freely-moving piston to lower?