Heatwhat is the theoretical yield of aluminum oxide if 3.40 mol of aluminum metal is exposed to 2.85 mol of oxygen?

193.8 grams

Explanation:

As can be seen from the chemical equation, 2 moles of aluminium react with 3 moles of oxygen.

Thus 3.40 moles of aluminium react with= moles of oxygen.

But as the available amount of oxygen is less, oxygen is the limiting reagent as it limits the formation of product and aluminium is the excess reagent.

3 moles of oxygen react with 2 moles of aluminium

2.85 moles of oxygen react with= moles of aluminium.

3 moles of oxygen give 2 moles of

2.85 moles of oxygen give= moles of .

Mas of .

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.