Questions 2324 use the following information. A proposed mechanism for the decomposition of hydrogen peroxide is given below: H,02(aq) + 1 Taq) -H,000+10 Tag) (slow) 10 (4) + H2O2(aq) - H20(C) +0,(g) + 1 eq) (fast) 23. Which species is an intermediate in this mechanism? (A) (aq) (B) 10 (ay) (C) H20(0) (D) H,02(aq) 24. Which particle is a catalyst in the above mechanism? (A) 1104) (B) 10(a) (C) H,00) (D) H0,(04) 25. Radioactive decay is a first order process. The half-life of element is one day. How long will it take 8.0 grams of radioactive element D to decrease to 1.0 gram? (A) 2 days (B) 3 days (C) 4 days (D) 8 days