The active agent in many hair bleaches is hydrogen peroxide. The amount of H2O2 in 13.2g of hair bleach was determined by titration with a standard potassium permanganate solution: 2 MnO4(aq) + 5 H2O2(aq) + 6 H+(aq) 5 O2(g) + 2 Mn2+(aq) + 8 H2O(l) (a) For the titration, how many moles of MnO4 were required if 46.9 mL of 0.138 M KMnO4 was needed to reach the end point? Write your answer to the correct number of significant figures. Enter your answer in scientific notation.

(a) For the titration, how many moles of MnO4 were required if 46.9 mL of 0.138 M KMnO4 was needed to reach the end point? Write your answer to the correct number of significant figures. Enter your answer in scientific notation.

(b) How many moles of H2O2 were present in the 13.2 g sample of bleach? Write your answer to the correct number of significant figures.