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Parse a chemical formula and calculate molar mass from CIAAW 2024 abridged standard atomic weights with source provenance.
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Parse a chemical formula, count each element, and calculate molar mass from CIAAW's 2024 abridged standard atomic weights.
Result
74.092 g mol⁻¹
This uses abridged standard atomic weights intended for general chemical calculations. Natural isotopic variation means standard atomic weights are not exact isotope masses.
Element breakdown
Working
1(40.078) + 2(15.999) + 2(1.008) = 74.092 g mol⁻¹
Elements
Total atoms/formula unit
Scientific source
IUPAC Commission on Isotopic Abundances and Atomic Weights (CIAAW)
Abridged Standard Atomic Weights 2024
Version: 2024
Open source table