Suggest an efficient synthesis for the following transformation: atd.. The synthesis above can be performed with some combination of the reagents listed below. Give the necessary reagents in the correct order, as a string of letters (without spaces or punctuation, such as "EBF"). A: t- BUOK C: 1) 03 B: 2) DMS HBr, ROOR D: HBr E: NaOMe F: H₂/Pt G: 1) BH3-THF 2) H₂O₂, NaOH H: conc. H₂SO4, heat 19 OH 1) Hg(OAc)2, H₂O 2) NaBH4 + En

11. A mixture was found to contain 4.36 g of NazCO3, 6.21g of S403 and 1.89 g of LI2Se: What is the percentage of Lithium selenium?

(#26) Concentration of Solutions A concentrated solution of hydrochloric acid contains 120.0 g of water and 72.0 g of hydrochloric acid. (26a) What is the total moles of components in the final solution? Type-in your answer in Blank #1. Enter only the value in regular numerals with three significant figures. 26b) What is the mole fraction for hydrochloric acid? Type-in your answer in Blank #2. Enter only the value in regular numerals with no digit or space filler and with three significant figures. (26c) Given the density of the solution as 1.189 g/mL, what is the total volume of the solution? Type-in your answer in Blank #3. The unit is milliliters, but enter only the value in regular numerals with four significant figures (26d) What is the Molarity of the solution? Type-in your answer in Blank #4. The unit is mole/L but enter only the value in regular numerals with four significant figures. Dial

Calculation of AH; of Magnesium Oxide Mg + 2 HCI MgCl2 * Hz2 AH, = kJ/mole MgCl2 +H2O > Mgo + 2 HCI -AH2 = kJ/mole He + 를 O2 + H2O AH3 = - 286 kJ/mole net: Mg + 을 O2- MgO 사Hnet = kJ/mole The literature value for the AHf of magnesium oxide is -602 kJ/mole.