1. When 26 mL of a 90 mL stock solution containing 3.23 M CaF2 is diluted to 35 mL, how many moles of F- are in the new solution?
2. When 27 mL of a 150 mL stock solution containing 2.11 M Na2S is diluted to 74 mL, how many moles of Na+ are in the new solution?