Molar Mass of KClO3
Molar Mass Calculator
What is the molar mass of KClO3?
Answer
M(KClO3) ≈
122.55 g/mol
Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — Cl: 35.45.
| Element | Atoms, n | Atomic weight, A | n × A, g/mol Mass fraction, w | |
|---|---|---|---|---|
| Kpotassium | 1 | 39.098 | 39.098 w ≈ 31.91% | ≈ 31.91% |
| Clchlorine | 1 | 35.45 | 35.45 w ≈ 28.93% | ≈ 28.93% |
| Ooxygen | 3 | 15.999 | 47.997 w ≈ 39.17% | ≈ 39.17% |
| Σ = 122.545 ≈ 122.55 g/mol w = 100% | 100% | |||
Each fraction is rounded on its own, so the printed ones add up to 100.01%; unrounded, they make exactly 100%.
Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)
O 39.17%
K 31.91%Cl 28.93%
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