Anonymgo Anonymgo Chemistry Answered A 1.0 L aqueous solution contains 0.30 mol of KBr and 0.60 mol of NaBr. What is the minimum number of moles of Pb(NO3)2 that must be added to precipitate all of the bromide ions? 0.90 mol 0.45 mol 0.15 mol 0.60 mol 0.30 mol