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how many moles of O2 would be needed to produce 1120.5 kJ of heat from the reaction:

3Fe + 2O2 yields Fe3O4+ 1120.5 kJ I got 627771.33 which I thought seemed a bit too high. My proportion was 1120.5=2 O2/1120.5.

Thanks again.

  • Chemistry - ,

    Nuts to your calculation. You were given that is the heat of reaction which used 2 moles of 02. Answer: 2 moles of O2

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