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  1. E

    Chemistry P31

    No as that would ruin the ratio.....I think I should have put 2:3:2 for the simplest ratio instead of 1:1.5:1 It can be rounded to 2 but then there is nothing as FeO2 as that molecule does not exist as the valencys do not match up....Im sorta confused someone help me with this one...
  2. E

    Chemistry P31

    U got mole ration 1:2:1?? How come? isnt it 1:1.5:1 now Im confused :(
  3. E

    Chemistry P31

    I got mole ratio 1:1.5:1 so it would be 2:3:2 which would be Fe2O3.2H2O
  4. E

    Chemistry P31

    Fe2O3.2H2O do u think this is rite for hydrated?
  5. E

    CHEMISTRY PAPER 31.. easiest paper in the history of chemistry papers 3!!

    Did u have any questions? Doubts?
  6. E

    Chemistry P31

    But Fe2O3(OH)2 does not exist and (OH)2 would give 2H and 2O but we need 2H2O....so it should be Fe2O3.2H2O as it is hydrous what do u think?
  7. E

    Chemistry P31

    No because The electrons flow from the cathode(B) to the anode(A) therefore, the Fe in the cathode is going out as ions Fe3+ and releasing electons....the Fe3+ then reacts and forms Fe2O3.... I think this is right....coz thats how I learnt it in school....but Im not entirely sure that its B....
  8. E

    Chemistry P31

    Nononononono.....lol I put Fe2O3.2H20 because it was hydrous but I think Im wrong :(
  9. E

    CHEMISTRY PAPER 31.. easiest paper in the history of chemistry papers 3!!

    I agree!!! The paper was really easy!
  10. E

    Chemistry Paper 3 was awesome!!!!!

    How did u find the paper?
  11. E

    Physics, Chemistry and Biology: Post your doubts here!

    i) Accuracy, fair test.... ii)240 but im not sure why or how...
  12. E

    Physics p61

    I put the same for the first three and then I dont remember my last one....
  13. E

    Physics p61

    omg Im an idiot....of course its in grams and kg....I dont know why I did that in the exam :( How many mark question was it? This was the one on the first page right?
  14. E

    Physics Paper 6 V1

    mine went ok.... lots of silly mistakes....the total was out of 40 right? My scale for the current in the x axis was like 0.015 per square....not the big one but the small square....do u think it will be accepted?
  15. E

    Physics, Chemistry and Biology: Post your doubts here!

    lol XD
  16. E

    Physics, Chemistry and Biology: Post your doubts here!

    Im on my friedns computer and its horrible... :( Its not even able to load a question paper :(
  17. E

    Physics, Chemistry and Biology: Post your doubts here!

    Best of luck everyone for tomorrow :) DO WELL IN CHEM PAPER 3 :D Wish me luck too XD
  18. E

    Physics p61

    If u put mass as 70g then I think its wrong....coz u need to put in newtons coz its mass not weight....I put 0.5N which is like 50g....
  19. E

    Physics p61

    1.53 for the previous question (the gradient)
  20. E

    Physics p61

    about 6-8 marks but if there is ecf then about 4 marks....dont worry ;)
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