To balance an unbalanced equation, you need to add numbers to the left of one or more formulae. Here is one way to work out how to do this for the reaction between nitrogen and hydrogen.

Copyright © 2025 BBC. The BBC is not responsible for the content of external sites. Read about our approach to external linking.

Microsoft Teams for Education is a powerful communication app for schools that enhances collaboration and learning. Video collaboration, chat, assignments, class materials, and notes are all built ...