Hydrazine (N2H4) decomposes to produce N2 and NH3. How many molecules of N2 will be formed if 60 molecules of N2H4 decompose into H2 and NH3?

Question

Products equation

Answer 1

You must first write a correctly balanced equation for the reaction taking place:

3N₂H₄ ==> N₂ + 4NH₃ .. balanced equation

This tells us that 1 molecule of N₂ will be formed from 3 molecules of N₂H₄

Using this stoichiometric ration, we can now answer the question:

60 molecules N₂H₄ x 1 molecule N₂ / 3 molecules N₂H₄ = 20 molecules of N₂