Solve number 3 pls hopefully 4 but if your busy then that’s ok

Asample of ammonia reacts with oxygen as shown. 4nh3(g) + 5o2(g) 4no(g) + 6h2o(g) what is the limiting reactant if 4.0 g of nh3 react with 8.0 g of oxygen? o2 because it produces only 0.20 mol of no. nh3 because it produces only 0.20 mol of no. o2 because it produces two times less no than nh3. nh3 because it produces three times more no than o2.

Witch two conditions can limit the usefulness of the kinetic molecular theory in describing gas behavior?

What is the mass of 0.750 mole of aluminum oxide, al2o3?