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  1. A

    physics p42

    I am also expecting a question on quantum physics with line spectra... :ugeek: if someone has any guesses of the paper then plzzzzzzzzzz post here...
  2. A

    Chem paper 22 and 52

    My teacher told me that we might get how to calculate the value of Ka of a weak acid...not sure only guess for chemistry P5 design
  3. A

    Chem paper 22 and 52

    Sorry i don't have the paper on Tuesday its on Wednesday @ 15:30
  4. A

    chem33

    I think that you must dry the gas the gas first (i use calcium hydroxide for this) then collect it with a gas syringe.
  5. A

    Chem paper 22 and 52

    I'm also sitting for that paper on tuesday. Unfortunately i also don't know what will be there in the paper...anyone who knows please post here...
  6. A

    statistic help...

    I really need help with this question: nov 09 paper 61 http://www.xtremepapers.net/CIE/index.php?dir=International%20A%20And%20AS%20Level/9709%20-%20Mathematics/&file=9709_w09_qp_61.pdf Can anybody help me with ques no 3 second part... thanks in advance
  7. A

    statistic trouble help

    yeah the last part i have mistaken it the is 196...sorry
  8. A

    Chemistry Practical (Paper 33)

    I had obtained a value of 17.50 for the both accurate titration...
  9. A

    statistic trouble help

    for the first part i do it like this: ___ ___ ___ 6c1 x 5c1 x 4c1 you can only use the digits 1,3,5 or 7 so the last block is 4c1 then you you will be left with 6 digits. so you start with the first block which will be 6c1 and the second block 5c1. You multiply it and you will get the...
  10. A

    chemistry practical p33.....tomorrow

    Might be Double indicator titration...salt analysis...and may be rate of reaction or enthalpy changes.
  11. A

    maths p32

    Am also going to take part in p32... its starting at noon for me
  12. A

    POST ANY BIOCHEMISTRY-RELATED DOUBTS HERE

    I would like to know where sodium,zinc and magnesium is found in the human body and wht are their role? I would also like to know how you will answer the ques of june 08 P4 8(a) which diagrams to draw...
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