1. How many milliliters of a 80 mL solution of 1.7 M Na3PO4 must be used to make 69 mL of a solution that has a concentration of .8 M Na+?
DO NOT use scientific notation. Always report your answer with 3 significant figures.
2. A 14 mL sample of a solution of AlBr3 was diluted with water to 56 mL. A 25 mL sample of the dilute solution was found to contain 2.31 M Br-. What was the concentration of AlBr3 in the original undiluted solution?
DO NOT use scientific notation. Always report your answer with 3 significant figures.