Mass of Oxygen : 18.8 g
<h3>Further explanation</h3>
Reaction(balanced) :
4Fe + 3O₂ → 2Fe₂O₃
mass Fe = 43.7 g
mol Fe(MW= 55,845 g/mol) :

mol O₂ : mol Fe = 3 : 4, so mol O₂ :

Mass O₂(MW=32 g/mol) :

Or simply you can Conservation of mass, where the masses before and after the reaction are the same
<em>mass reactants=mass products</em>
mass iron+mass oxygen=mass iron (III) oxide
43.7 g + mass oxygen=62.5 g
mass oxygen = 62.5 - 43.7 = 18.8 g
In this model, electrons are found on unique levels and when jumping from one level to another, electrons emit light at a specific wavelength.
<h3>What is the Bohr model?</h3>
The Bohr model is an atomic model describing the properties of atoms and their constituents (electrons).
This model states different atoms have specific levels of energy where electrons can be located.
In conclusion, in this model, electrons are found on unique levels and when jumping from one level to another, electrons emit light at a specific wavelength.
Learn more about the Bohr model here:
brainly.com/question/18002213
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Answer:
you would do the exponents first (10 times 23) and then multiply that (230) and 3.20.
Explanation:
That should be correct!:)