Consider the following chemical reaction: 4 Al(s) + 3 O2(g) ⟶2 Al2O3(s)

If 4.2 grams of Al reacts with 3.0 grams of O2,

1. How many grams of Al2O3 could be produced?

2. Which reactant is limiting?

3. Which reactant is excess?

4. How much of the excess reactant would remain?

What are the 4 phases of matter in order of increasing engery content?

An alkaline battery produces electrical energy according to the following equation. zn(s) + 2 mno2(s) + h2o(l) zn(oh)2(s) + mn2o3(s) (a) determine the limiting reactant if 17.5 g zn and 31.0 g mno2 are used. (type your answer using the format ch4 for ch4.) (b) determine the mass of zn(oh)2 produced. _ g

When electrolyzing copper (ll) chloride, what reaction takes place at the anode? what reaction takes place at the cathode?