Opportunities for Improvement

Instructions

This tool generates a stoichiometry problem using ionic compounds, with transition metals and polyatomic ions as options.
If you are just getting started practicing stoichiometry, the "Guided Practice Problem" is what you will want. If you're a teacher generating problems for an assignment, or a student trying to challenge yourself the standard generator is probably what you want.
These instructions and an embedded periodic table from ptable.com can be toggled on or off by clicking their respective buttons.