We just added a step by step Gravimetric Analyzer under the Stoichiometry section of
Chemistry Made Easy.
Download: www.TiNspireApps.com
For more information on Gravimetric Analysis read at KhanaAcademy at https://www.khanacademy.org/science/chemistry/chemical-reactions-stoichiome/limiting-reagent-stoichiometry/a/gravimetric-analysis-and-precipitation-gravimetry