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  1. girlscampisra

    A2 Physics | Post your doubts here

    diagram is must!
  2. girlscampisra

    Physics Paper 5 tips

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_w11_qp_51.pdf q2 part d (i) can anyone please tell me why have they multiplied intercept by 2?? :confused:
  3. girlscampisra

    A2 Physics | Post your doubts here

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_w11_qp_51.pdf q2 part d (i) can anyone please tell me why have they multiplied intercept by 2??
  4. girlscampisra

    thanks!! :)

    thanks!! :)
  5. girlscampisra

    Chemistry P4| A2 only

    you mean we take into account ALL the reactions?! :eek:
  6. girlscampisra

    Chemistry P4| A2 only

    the reaction is first endothermic, then exothermic.. n overall reaction being exothermic.
  7. girlscampisra

    Chemistry P4| A2 only

    i guess it shows endothermic n exothermic both changes n the net change is them exothermic.. thats why 2 humps.
  8. girlscampisra

    Chemistry P4| A2 only

    oops i mean A only.. why is a 1 in 2nd n 3rd part
  9. girlscampisra

    Chemistry P4| A2 only

    yes plz smbody solve this.. i dont understand why is A n B 1 in 2 n 3rd part..
  10. girlscampisra

    Chemistry P4| A2 only

    lattice enthaply is not +ve .. where is it stated that it is positive ? it is enthalpy of hydration that is equal to n opposite to latt. enthalpy.. therefore positive.
  11. girlscampisra

    Chemistry P4| A2 only

    gt for this was 54! no wonder why! :P n yeah question 3 d is just trial n error type question!
  12. girlscampisra

    Chemistry P4| A2 only

    haha i got confused in the first place too! :p
  13. girlscampisra

    Chemistry P4| A2 only

    primary carbon which is attached to one carbon only.. secondary which is attached to 2 carbons n tertiary which is attached to 3 carbons.. in 3 methyl propene the methyl carbon is primary as its attached to 1 carbon only so forms co2 while 2nd carbon of propene is a tertiary carbon so forms...
  14. girlscampisra

    Chemistry P4| A2 only

    and its 2 methyl propENE not proPANE!
  15. girlscampisra

    Chemistry P4| A2 only

    when double bond breaks , the primary carbon forms co2 , secondary forms carboxylic acid while tertiary forms ketone.. as u can see double bond is between primary n tertiary carbon the products will be co2 n ketone!
  16. girlscampisra

    Chemistry: Post your doubts here!

    please make a separate thread for A2 chem :s this is so confusing!
  17. girlscampisra

    A2 Biology | Post your doubts here

    biodiversity question comes almost every year! endangered species n stuff!
  18. girlscampisra

    A2 Biology | Post your doubts here

    biodiversity is the presence of a variety of species, the variation within species and the genetic diversity between the species.
  19. girlscampisra

    A2 Biology | Post your doubts here

    can anyone please explain me DNA sequencing? :(
  20. girlscampisra

    A2 Biology | Post your doubts here

    Y yes you're right!
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