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. When you open the file it'll ask for a password. The password is ri5uv65. Hope it helped 
thnx buddy!My chem teacher gave us this PDF file which has all the important notes of all chapters. I think it would be useful to everyone so download it
sure..no probs!Mind tagging other people doing IGCSE, I don't remember all the names :/ thanks
u kno wt??jz go 2ru d guide..don waste time in lrnin vrything in detail..insted practice pstpprs!
i dont evn hv one day gap...cz i take bsns st
ikr..poor us..vr ritin all d sub
LOL!!!not all sub!!!!! many ppl duin evn 9 subsikr..poor us..vr ritin all d sub
(part 1 )see in the first line its given that 175 cm3 of o2 was used and in the last line its given that 25 cm3 of o2 is left
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