What kind of questions CANNOT be answered by chemistry?

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?

What does the xylem do? stores the glucose captures the sunlight absorbs oxygen into the leaf carries water from the roots to the leaves