Stoichiometry 與 ODYSSEY Resonance 使用情況與統計

Stoichiometry is an ultimate tool for balancing chemical reactions, finding molar masses, moles and actual masses of reactants and products based on their chemical formulas, stoichiometric coefficients and any quantitative data provided, that available on Apple Store for iOS and Mac . It is enough to provide initial or final (after reaction accomplishment) mass or moles of one of the reaction component, to calculate all required and obtained masses and moles of all components. If data is available for several components, then limiting reagent will be found based on reaction stoichiometry. Molecular formula format: charge or unpaired electrons (in free radicals), if exist, must be provided as well, separated by coma: Na,+ ; R,: ; SO4,2- . Application supports state indexes: (g), (s), (l), (aq) – all are lowercase only, placed at the end of compound formula. App can send the data to  Gas Phase Stoichiometry app to further calculate pressures and volumes of gaseous compounds. Either moles or masses can be filled in, but if by mistake both are provided and they don’t match, then the moles value will have a preference. Component will be taken into consideration once the stoichiometric coefficient is provided for it. For balancing redox reactions please refer to Electrochemistry application. Further information and examples are provided at http://www.volard.wordpress.com.
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  • 教育

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How different are double and triple bonds from single bonds? And what do double-bonded molecules with multiple Lewis structures―such as ozone, nitric acid, and benzene―look like? ODYSSEY Multiple Bonds and Resonance is a visualization app that uses the results of rigorous quantum chemical calculations in order to fight pervasive misconceptions about molecular structure. Models of 51 simple molecules and ions are provided, both inorganic and organic. Each model can be manipulated in 3D with simple gestures. Bond lengths and bond angles can be queried. The user can pick from conventional model styles such as Ball&Spoke and Space Filling. Surpassing schematic representations, the electron clouds can also be displayed as isosurfaces of the electron density. A table of standard bond lengths, glossary, comments section, and a set of multiple-choice questions (with randomized options) complete the app. Resonance is a core concept of chemistry that is surrounded by mystery. Working with ODYSSEY Multiple Bonds and Resonance and taking an inquiry-based approach can help provide a clearer understanding of the subject.
  • Apple App Store
  • 付費
  • 教育

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Stoichiometry VS.
ODYSSEY Resonance

1月 17, 2025