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At one point in the video, someone is balancing a chemical reaction. The person writes a coefficient of 2 in front of Fe2O3 but then writes a 4 for the number of iron (Fe) atoms. Explain this difference.
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At one point in the video, someone is balancing a chemical reaction. The person writes a coefficient of 2 in front of Fe2O3 but then writes a 4 for the number of iron (Fe) atoms. Explain this difference.

User MrTechie
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There are 2 Fe ions in one Fe2O3 molecule. The coefficient is 2 so there are 4 iron atoms ( 2x2=4)
User Peterxwl
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