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4. A 35.0 mL sample of 1.00 M KBr and a 60.0-mL sample of 0.600 M KBr are mixed. The solution is then heated to evaporate water until the total volume is 50.0 mL. What is the molarity of the KBr in the final solution?
mols KBr soln 1 = M x L = ?
mols KBr soln 2 = M x L = ?
final M = total mols KBr/volume in L.