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  1. X

    Paper 5 Tips !! :)

    are doubts left ??
  2. X

    Paper 5 Tips !! :)

    go on 1st page i have posted their how to make diff concentrations thats exactly what you want
  3. X

    Paper 5 Tips !! :)

    if finding molality in 1000g molality = molex1000/mass of water
  4. X

    Paper 5 Tips !! :)

    whats the rocket science in it any one pls ! http://papers.xtremepapers.com/CIE/... AS Level/Chemistry (9701)/9701_w12_qp_53.pdf Q3d AmoooMMM
  5. X

    Paper 5 Tips !! :)

    ya me too getting weired values but we all having the same issue
  6. X

    Paper 5 Tips !! :)

    nov 52 going to attemp insha Allah
  7. X

    Paper 5 Tips !! :)

    still problem?
  8. X

    Paper 5 Tips !! :)

    i guess this was for neutralisation question, so the point was we know 1 mols of Naoh gives 1 mol of h20(equation) neutralization is for 1 mol of h20 produced so energy evolved divided by the n mols of Naoh(1:1 ka ratio)
  9. X

    Chemistry: Post your doubts here!

    i did answer to that part, b/c examiner stated ratio of I:Zn
  10. X

    Paper 5 Tips !! :)

    knowitall10 @MaxAlevel what u did
  11. X

    Paper 5 Tips !! :)

    Student12 https://docs.google.com/file/d/0Bzq5n8R79M6_RTlxQUdKUE5qcWs/edit?usp=sharing graph !
  12. X

    Paper 5 Tips !! :)

    yup similarly u can evaporate the water to get the residue(mass of crystals)
  13. X

    Paper 5 Tips !! :)

    from ur excerpt yes
  14. X

    Paper 5 Tips !! :)

    li line is just many dots connecting two dots :P could be straight or curve
  15. X

    Paper 5 Tips !! :)

    thats simple dilution
  16. X

    Paper 5 Tips !! :)

    y yup
  17. X

    Paper 5 Tips !! :)

    Slope = y2-y1/x2-x1 Maths maths maths
  18. X

    Paper 5 Tips !! :)

    is ur prob resolved?
  19. X

    Paper 5 Tips !! :)

    0.0000000021 is 2 significant figures 2.01 is 3 sig fig 0.101 is 3 sig conclusion zeros before any number is bekar zeros after any numbers are royals 21.09 is 2 decimal places for this I:Zn because they asked it in a question ! zinc has been oxidised during drying== means zinc still have...
  20. X

    Paper 5 Tips !! :)

    no u have to draw a curve for lower temperatures!
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