Concentration

Molar mass, grams and moles

Type an element or formula (Sb, NaCl, C6H12O6) and convert grams to moles. Molar mass is computed from cited atomic weights.

n = m / MW
Protocol result
Learn and practise
How do you calculate molar mass from a formula?
A worked example with every step shown, and where it usually goes wrong.
Practice problems
Ten problems with worked solutions, every answer computed by this calculator.
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Molar mass, grams and moles, Aliquot