The oxide Fe2O3 has 3 oxygen atoms in the molecule.
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In Fe2O3, there are 3 atoms of oxygen for each molecule of Fe2O3.
In Fe2O3, there are 2 iron (Fe) atoms and 3 oxygen (O) atoms, totaling 5 atoms in one molecule of Fe2O3.
One molecule of Fe2O3 has a total of 5 atoms - 2 iron (Fe) atoms and 3 oxygen (O) atoms.
There are 5 atoms in a single molecule of Fe2O3: 2 iron (Fe) atoms and 3 oxygen (O) atoms.
To determine the number of atoms of oxygen in the product of a double replacement reaction, you need to know the chemical formula of the product. The number of oxygen atoms will depend on how many oxygen atoms are present in the chemical formula of the product compound. You can count the number of oxygen atoms in the formula of the product to find the total number present.