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  1. xIshtar

    Chemistry paper 12 discussion!!!!!!!!!!

    Did the question say the core, or outside of the cable?
  2. xIshtar

    Chemistry paper 12 discussion!!!!!!!!!!

    The steel making theory was oxygen, CaO and heat.. Unfortunately, I only put oxygen and heat ):
  3. xIshtar

    Chemistry paper 12 discussion!!!!!!!!!!

    Ahhh.. Just read it now :/ Well that is 1 wrong ):
  4. xIshtar

    Chemistry paper 12 discussion!!!!!!!!!!

    It meant what is it mainly made from.. And yes, it is methane as natural gas is majorly methane. :D
  5. xIshtar

    Chemistry paper 12 discussion!!!!!!!!!!

    Same :D
  6. xIshtar

    Chemistry paper 12 discussion!!!!!!!!!!

    I wrote that the cables were made of copper as it is a better conductor, and the electrodes were platinum.
  7. xIshtar

    Chemistey Doubts

    Make it tetrahedral, and make sure that you maintain the ratio as in Silicon(iv) oxide. Which is, 1 Silicon : 4 Oxygen 2 Oxygen : 1 Silicon Thus the formula is maintained. :)
  8. xIshtar

    Eco Paper 12 help needed!!!!

    The answer is definitely A.. Good luck to you all today :D
  9. xIshtar

    chemistrey paper 11 stainless steel alloy question

    Yeah, but all the others were right :D
  10. xIshtar

    chemistrey paper 11 stainless steel alloy question

    Yep, exactly what I put :D
  11. xIshtar

    Chemistey Doubts

    But in short, the colour change is partially down to the iodine.
  12. xIshtar

    Chemistey Doubts

    No.. Potassium iodide is a reductant in acidic conditions. So, the colour changes from colourless to brown in the presence of an oxidant..
  13. xIshtar

    Currently Listening To?

    Uhh, Protest the hero.. Not sure what the songs are called, cause my friend bought it for me as a present yesterday :P Something like, C'est la vie.. Technical metal ftw.
  14. xIshtar

    chemistry question

    Going through the entire question D.. 100g of fat reacts with 86.2g of iodine. 884g of fat reacts with 762g of iodine. Now work out moles: Fat = 884/884 = 1 mol. Iodine = 762/(127x2) = 762/254 = 3 => 1 mole of fat reacts with 3 moles of iodine molecules. => There are 3 double bonds in one...
  15. xIshtar

    chemestry 11 discussion

    They didn't explain eachother :O I put B..
  16. xIshtar

    chemistrey paper 11 stainless steel alloy question

    What I chose too. As the stainless steel one was right, as it doesn't allow the oxygen to get to the iron, and the second one was also correct, but no method described explained the first one :D
  17. xIshtar

    chemistry doubt !! pls help !!!

    Given off :P Heat is liberated in an exothermic reaction.
  18. xIshtar

    Chemistry Paper 1 Doubts Here... !

    If you heat the crystals, you will remove the water. You want the crystals to remain hydrated, so it is counter productive. Hope I helped.. Good luck today man :D
  19. xIshtar

    chemistry paper 1 !!!!

    I have about 5 hours to go till I take my paper.. I don't want to know whats in it.. After all, if you get a good grade on your own, you know that it was deserved rather than cheated.
  20. xIshtar

    chemistry paper 1 !!!!

    Maybe it hasn't been taken yet? :P
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