1. What mass of NaOH(s) must be added to 300 mL of HCl 0.25 M in order to completely neutralize this acid?
2. During a lab, you mix 2 solutions: a 100 ml solution containing 0.40 g of NaOH and a 100 mL solution containing 0.73 g of HCl. What is the concentration of H+ ions in the new solution?