Calculate the mass fraction of iron and oxygen in iron oxide 3
| May 15, 2021 | education
Given:
Fe2O3
To find:
ω (Fe in Fe2O3) -?
ω (O in Fe2O3) -?
Decision:
1) ω (Fe in Fe2O3) = N (Fe in Fe2O3) * Ar (Fe) * 100% / Mr (Fe2O3) = 2 * 56 * 100% / 160 = 70%;
2) ω (O in Fe2O3) = 100% – ω (Fe in Fe2O3) = 100% – 70% = 30%.
Answer: Mass fraction of Fe in Fe2O3 is 70%; O – 30%.
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