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Search results

  1. histephenson007

    Likaholic :D

    Likaholic :D
  2. histephenson007

    Chemistry P4| A2 only

    Isn't this quantum physics?? :S Y is it here!!! ?!
  3. histephenson007

    Chemistry P4| A2 only

    Can anyone explain why lattice enthalpy is positive (endothermic) when we are talking about solubilities of Group II sulphates. But becomes negative (exothermic) when we are talking about the Born-Haber Cycle????????? dafuq?
  4. histephenson007

    Chemistry P4| A2 only

    How are supposed to do 3.a) ?? Are we supposed to know how d-orbitals look like???????? :eek:
  5. histephenson007

    Chemistry P4| A2 only

    so, what are the usual GTs around?
  6. histephenson007

    Chemistry P4| A2 only

    yayyy!! A2 thread for p4 chem :D
  7. histephenson007

    Chem p5, gaining confidence :D

    Chem p5, gaining confidence :D
  8. histephenson007

    lookin at the handwriting, u want to be a doctor. yeah? ;p

    lookin at the handwriting, u want to be a doctor. yeah? ;p
  9. histephenson007

    Chemo P5 tips

    I think it has something to do with the water being 50g as said in the question and the units all being /100g of water
  10. histephenson007

    Physics / Chemistry / Bio P5 help

    all 3 subjects I'm thinking
  11. histephenson007

    Chemo P5 tips

    for an A?
  12. histephenson007

    Chemo P5 tips

    And, can anyone tell me what are the usual GTs in paper 5 to get an A/A* for chem, bio and phy ?!
  13. histephenson007

    Chemo P5 tips

    I've just started reading your notes, they have been really helpful. THANK YOU VERY MUCH. I'm sorry if this question was asked before, but I just can't understand the formula u gave in point 11. The rest of the method seems fairly simple.
  14. histephenson007

    thank you for chem p5 ~

    thank you for chem p5 ~
  15. histephenson007

    Physics P4 Discussion

    I know, I did the same thing!!!!! :)
  16. histephenson007

    A2 Biology | Post your doubts here

    then, as the book suggests, (N - normal allele, S- sickle cell anaemia allele) NN - Safe from sickle cell anaemia, but prone to malaria infection because the red blood cells are in good shape. So, easy for plasmodium pathogens to travel through the red blood cells. NS - Safe from sickle cell...
  17. histephenson007

    A2 Biology | Post your doubts here

    Isn't it supposed to be homozygous for sickle cell anaemia B-polypeptide??
  18. histephenson007

    Organic chemistry reactions. ALL REACTIONS! Pleaseeeeeeee - DESPERATE

    I suggest u create a flowchart of your own. It really helps
  19. histephenson007

    A2 Biology | Post your doubts here

    This is the main part of the picture. When the chromosome line up along the equator, they do it randomly. The white and dark chromosomes can align as in the first picture or not align as shown in the second picture.
  20. histephenson007

    A2 Biology | Post your doubts here

    Can anyone tell me all the important definition required in the genetics chapter??! gene mutation, codominance...etc
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