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# Chemistry As level (moles) watch

1. Attachment 506947506949 Guys can you help me gets all the equations for this question, I think I would be able to do it if I know the equations.thankyou
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2. (Original post by Luj99)

Attachment 506947506949 Guys can you help me gets all the equations for this question, I think I would be able to do it if I know the equations.thankyou
Use the equation for the reaction and moles = mass/Mr
3. I don't no the reactions guys that's why I need help, but I think if I no them I can do the question pls hurry guys
4. Guys hurry I need to complete it for tomorrow
5. For part a write an equation, then balance it and use mol= mass/mr to find the mass of iron oxide(lll)
Spoiler:
Show
2Fe2O3(s) + 3C(s) → 4Fe(l) + 3CO2(g)
Fe2O3(s) + 3CO(s) → 2Fe(l) + 3CO2(g)
6. it will be 7*10power of 8/ (55.8*3)+(16*3)

7. For part b of course use your equation and values from part a to work out the amount of carbon needed
Spoiler:
Show
2C(s) + O2 → 2CO(g)
8. Not sure about part c sorry
9. (Original post by thefatone)
Not sure about part c sorry
For part c find the moles of oxygen used then use the formula pv=nrt the conditions should be supplied if not assume standard conditions i.e. 1 mole of oxygen occupies 24dm-3

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