Calculate the mass fraction of sodium in the Na2O compound.
| November 23, 2020 | education
1) first of all, you need to find the paint mass of the whole substance (M)
M (Na2O) = 16 + 23 * 2 = 62g / mol
2) find the atomic mass of sodium
Аr (Na2) = 23 = 23 = 46
2) we write down the formula for finding the mass fraction of the element
ω = Ar / M * 100%
3) we calculate by the formula
ω (Na) = 46/62 * 100% = 74.2%
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