Identify each of the following reactions as balanced or unbalanced

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

According to le chatelier’s principle, a system in chemical equilibrium responds to stress by shifting the equilibrium in a direction that reduces the stress. normalizes the stress. increases the stress. changes the stress.

Complete each row of the table below by filling in the missing prefix or missing exponent.