I’m really confused can someone help me?

What is important to study for nios grade 12 chemistry? i have only one month left.

Aside from human impact, which of the following causes less water vapor production over a small area? (2 pderivartin

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