Final answer:
To determine which compound has the higher percentage of oxygen, we calculate the mass percentage of oxygen in each compound (FeO, FeCO3, Fe2O3, Fe3O4). Using the provided atomic masses, we find that FeCO3 has the highest percentage of oxygen, with 41.38%.
Step-by-step explanation:
To determine which compound has the higher percentage of oxygen, we calculate the mass percentage of oxygen in each compound using the atomic masses provided (Fe = 56, O = 16, C = 12) and compare them.
- FeO: The molar mass of FeO is 56 (for Fe) + 16 (for O) = 72. The mass percentage of oxygen is (16/72) * 100 = 22.22%.
- FeCO3: The molar mass of FeCO3 is 56 (for Fe) + 12 (for C) + 3 * 16 (for O) = 116. The mass percentage of oxygen is (48/116) * 100 = 41.38%.
- Fe2O3: The molar mass of Fe2O3 is 2 * 56 (for Fe) + 3 * 16 (for O) = 160. The mass percentage of oxygen is (48/160) * 100 = 30.00%.
- Fe3O4: The molar mass of Fe3O4 is 3 * 56 (for Fe) + 4 * 16 (for O) = 232. The mass percentage of oxygen is (64/232) * 100 = 27.59%.
Comparing these values, FeCO3 has the highest percentage of oxygen.