Download, embed or run (Java). From the University of Colorado.
A PERFECT STARTER!
Practice balancing chemical equations - see the short illustrated guide below ↓
Balance chemical reactions (and more...).A great tool for checking if you got your answer right! WolframAlpha will not show you step-by-step reasoning - but "Balancing equation" from Cavalcade o' Chemistry will help you with that. Use the link below to access WolframAlpha.
Start by clicking on the "=" (equals) sign
Once you entered your equation, the tool interprets it and provides the balanced equation.
Note: you get correct answers as far as the dataset is complete.