Chemistry education · Stoichiometry basics
Amount of substance from mass
Convert a sample mass to amount of substance using a molar mass supplied by the user.
Method and scope
Amount n = sample mass m ÷ molar mass M.
Apply n = m ÷ M using a molar mass already determined from a trusted chemical reference. Intended for Learners, Classroom use.
Inputs- Sample mass — g, kg, mg
- Molar mass — g/mol, kg/mol
SOURCE AND LIMITS
Assumptions: The supplied molar mass is correct for the stated substance and isotopic composition. Mass and molar mass use compatible units.
Limitations: Purity, hydration state, isotopic composition, and measurement uncertainty are not assessed.
Method version 1.0.0 · Unit registry and result provenance are shown after calculation. This tool is limited to the documented scope.Explore related fields
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