[xxdeathxnotexx]

Hi, I understand that these are probably easy questions, but I have attempted them and do not understand how to work them out. Any help will be great, thanks 

In the equation below, which atoms are being oxidised and reduced?
4FeS_(s) + 11O_2(g) 2Fe₂O_3(s)+8SO_2(g)
I attempted it and got 2 atoms being oxidised and that cannot be right.   

What is the oxidation and reduction half equation for:
4FeS_2(s)+14O_2(g)+4H₂O_(l) 4Fe⁴⁺_(aq)+8SO₄^2-_(aq)+8H⁺_(aq)
I'm unsure about how to write the oxidation half equation. 

thanks

[Borek]

Nothig wrong with more than one atom being oxidised in the same reaction.

FeS₂ contains Fe(II) and S₂^2-, it is so called persulfide.