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  1. Y

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

    yes, also heat is needed to keep the iron molten
  2. Y

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

    but hot and pressurized oxygen is blown into the furnace so heat would be needed
  3. Y

    The most major doubt

    question 19 is B potassium iodide since there's yellow ppt question 36 is D C5H12 general formula CnH2n+2
  4. Y

    CHEMISTRY PAPER 3- HELP

    but i saw examples in many books where increasing the concentration of the acid that is in excess, increased the rate of the reaction producing same final volume of the gas
  5. Y

    CHEMISTRY PAPER 3- HELP

    MAY/JUNE 2010 PAPER 31 QUESTION 3 PART D, WHY IS CONCENTRATION NOT ACCEPTABLE AS AN ANSWER http://www.xtremepapers.me/CIE/Cambridg ... _qp_31.pdf http://www.xtremepapers.me/CIE/Cambridg ... _ms_31.pdf http://www.xtremepapers.me/CIE/Cambridg ... s10_er.pdf ANY HELP WOULD BE APPRECIATED
  6. Y

    CHEMISTRY PAPER 31 MAY/JUNE 2010

    nothing is mentioned about concentration in the er
  7. Y

    CHEMISTRY PAPER 31 MAY/JUNE 2010

    question 3) d) why is concentration not acceptable?? any help would be appreciated
  8. Y

    Paper 32 discussion

    i forgot what i wrote exactly, but it would take more time to operate
  9. Y

    Paper 32 discussion

    yup, i know that the current is the same but two lamps in series would make a potential divider and both lamps will light up lamps would blow when voltage is higher than the rating
  10. Y

    Paper 32 discussion

    in series: total resistance: 960 +12= 972 ohms emf =240V lamp1= 12/972 *240= 2.96V lamp2= 960/972*240=237V so student Y is correct
  11. Y

    Paper 32 discussion

    it was student Y, and for energy types i think they wanted any types other than the ones mentioned so i wrote kinetic,chemical,strain
  12. Y

    Computer paper 1 discussion

    who told you that 85+ is an A, it might be an A* since minimum mark for an A is low is it wrong for what i did in the megabit and megabyte question??
  13. Y

    Computer paper 1 discussion

    ohh..thanks but what i did was megabit----x8----kilobit---x8---bit---x8--byte--x1024--kilobyte--x1024--megabyte how much do you expect in computer?? the curve is always low are you doing paper 3 or have you done the project???
  14. Y

    Computer paper 1 discussion

    do you remember how the rest of the question was done?
  15. Y

    Computer paper 1 discussion

    how did you do it guys???? i calculated the size of tracks and photographs, so i would get partial credit right??
  16. Y

    Physics doubts!

    it's the angle of incidence in the higher optically dense medium where angle of refraction makes 90 degrees with the normal
  17. Y

    Physics doubts!

    experiment 1: 250g--->10500J 1g ---> x x= 42J needed for a 10 degree celsius temperature rise energy needed for a 100 degree celsius rise: 42J---->10 x----->100 x=420J experiment2...
  18. Y

    Computer paper 1 discussion

    actually it makes sense.for example when buying a car an expert system may ask a series of questions about features, colour and type of car. So they might accept it
  19. Y

    EXAMS(;) ) AND ILL BE COMING BACK

    are you sure it's IGCSE what your parents sat for? they probably have sat for A-levels or GCSE, because the international GCSE started in 1988
  20. Y

    THE A * GUIDE FOR THE BLOODY4(BIO P3,COMP P1,CHEM P6,PHY P3)

    Re: THE A * GUIDE FOR THE BLOODY4(BIO P3,COMP P1,CHEM P6,PHY don't forget preparation of salts and separation techniques btw in which country are you?
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