Calculate the mass fractions of aluminum and oxygen in aluminum oxide
| January 5, 2021 | education
To calculate the mass fractions of elements in a molecule, it is necessary to divide the atomic masses of the elements, multiplied by the number of atoms, by the total mass of the molecule and multiply by 100%.
M Al2O3 = 102 amu The share of Al = (27 * 2) / 102 * 100% = 52.94%, the share of O = (16 * 3) / 102 * 100% = 47.06%.
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