T-04
Mass to Moles Converter
Convert between mass and amount of substance (moles) using molecular weight, and see the number of molecules.
n = m / M
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Topic
Mass & moles
Move between grams, moles and molarity using molar mass.
Calculators
T-05
Molarity Calculator
Solve for mass, volume or molar concentration from the other two values and the molecular weight.
m = c × V × M
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Guides
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G-01
Moles and Molar Mass: Converting Between Grams and Moles
The mole, Avogadro’s number and molar mass explained for bench work, with the conversion n = m / M worked through for peptide-scale quantities.
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G-02
Molarity Explained, With Worked Examples
What molar concentration means, how to rearrange m = c × V × M to find mass, volume or concentration, and the preparation details that keep a solution at the molarity you calculated.