What are the empirical formulas of the com-pounds with the following compositions? (a) 2.1 percent H, 65.3 percent o, 32.6 percent S,
(b)
20.2 percent AI, 79.8 percent CI.

How many moles of sulfuric acid (h2so4) are needed to react completely with 6.8 moles of lithium hydroxide (lioh)? 2lioh + h2so4 → li2so4 + 2h2o a. 3.4 mol h2so4b. 6.8 mol h2so4 c. 10.2 mol h2so4 d. 13.6 mol h2so4