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THE FEUTEX TOOLKIT

Sample Moles and Particle Count

Calculate amount of substance and molecular count from sample mass, purity and molar mass.

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FormulaAmount of target substance = mass*purity/(100*molar); Molecular entities = mass*purity/(100*molar)*6.02214076e23; Impurity mass = mass*(1-purity/100)
Sources and model references

Worked example

Inputs

Sample mass
20 g
Mass purity
90 %
Molar mass
180 g/mol

Expected results

Amount of target substance
0.1 mol
Molecular entities
6.02214076e+22 entities
Impurity mass
2 g

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Calculate amount of substance and molecular count from sample mass, purity and molar mass.
  2. Set sample mass, mass purity, molar mass in the indicated units.
  3. Calculate and compare amount of target substance, molecular entities, impurity mass.

Try this example

{
  "mass": 20,
  "purity": 90,
  "molar": 180
}

Accuracy and scope

Idealized educational model. Enter measured values in the displayed units; real systems may require additional corrections.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.