Molar Mass of Na2B4O7·10H2O
Molar Mass Calculator
What is the molar mass of Na2B4O7·10H2O?
Answer
M(Na2B4O7·10H2O) ≈
381.36 g/mol
Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — B: 10.81.
10 H2O — water of crystallization, part of the molar mass: 10 × 18.015 = 180.150.
Na2B4O7·10H2O = Na2B4O7 + 10 H2O → Na 2, B 4, O 17, H 20
| Element | Atoms, n | Atomic weight, A | n × A, g/mol Mass fraction, w | |
|---|---|---|---|---|
| Nasodium | 2 | 22.990 | 45.980 w ≈ 12.06% | ≈ 12.06% |
| Bboron | 4 | 10.81 | 43.24 w ≈ 11.34% | ≈ 11.34% |
| Ooxygen | 17 | 15.999 | 271.983 w ≈ 71.32% | ≈ 71.32% |
| Hhydrogen | 20 | 1.0080 | 20.1600 w ≈ 5.29% | ≈ 5.29% |
| Σ = 381.363 ≈ 381.36 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 71.32%
Na 12.06%B 11.34%H 5.29%
Found an error in the calculation or the information?
Related Calculations
See Also
- Liters to Kilograms - How many kilograms are in a liter of water, honey, gasoline, sand and other substances — by density
- Grams to Kg - Convert Grams to Kilograms
- Percentage Calculator: Fraction to Percent - What percentage one number is of another? Convert fraction into a percentage
- Scientific Calculator with Memory & History - Free Engineering Calculator Online with Memory Function, Operation History, Logarithms & Trigonometry. Similar to ti-83, ti-84, ti-89
Share This Calculation
Print
<a href="https://calculat.io/en/other/molar-mass/na2b4o7.10h2o">Molar Mass of Na2B4O7·10H2O: Step by Step - Calculatio</a>Facebook
Twitter
Telegram
WhatsApp
Viber
Email
