Stoich escape room activity 🧪

Balance each one to generate the override code (the sum of all coefficients in each reaction). Add the coefficients of each balanced equation above separately. Each sum corresponds to the code.

Enter your 3-digit code.

Example: If the sums of each reaction are:

3
9
4

then your code would be 3-9-4 → enter 394

Fill in the missing “Before” amount of H₂.

Reaction:
2H₂ + O₂ → 2H₂O

Determine the missing “Change” value for N₂.

Reaction:
N₂ + 3H₂ → 2NH₃

Determine the missing “After” value for Al.

Reaction:
2Al + 3Cl₂ → 2AlCl₃

Reflect: In your own words, explain what this escape taught you about how limiting reactants and yield affect real chemical systems.

In this final calibration, you worked backward to find the exact reactant amounts needed to reach 100% efficiency. Explain how the ratio of reactants and products demonstrates the Law of Conservation of Matter.