Calculate the mass fractions of elements in the compound: Mg3N2, Fe2 (SO4) 3, Ce2O5.
| January 30, 2021 | education
To calculate the mass fractions of elements in compounds, it is necessary to calculate the molar mass of the element (and you need to take into account the number of atoms) and divide by the molar mass of the substance, and then multiply by 100 percent.
For example, in magnesium nitride w (N) = 100% * (2 * 14) / (3 * 24 + 2 * 14) = 28%
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