Can you please answer second and third questions?

1. Write structural formulas for the products that form when 2-pentene reacts with each of the following reagents: a. HI b. H2, Pt c. HBr d. Bra in CC14 e. Br2 in H20 f. 03, then Meas g. Os04, then NaHSO3/H20 h. KMnO4, HO-, heat, then H30+ i. Hg(OAc)2 in THF and H20, then NaBH4, HO- j. BH3:THF, then H2O2, HO- 2. By using the same alkene, how do you synthesize the following alcohols? Give the alkene and show the mechanisms for each product formation. OH . XO OH 3. Give the structure of the products that you would expect from the reaction of 1-butyne with: a. One molar equivalent of Br2 b. One molar equivalent of HBr c. Two molar equivalents of HBr