• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Search results

  1. S

    Mathematics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_s11_qp_61.pdf Q5 pleasee
  2. S

    Mathematics: Post your doubts here!

    I still dont get it :/ do you mind working it on a piece of paper showing the steps and explaining them and uploading it? :/ only if its not too much and your not too busy :(
  3. S

    Mathematics: Post your doubts here!

    But the 30.0 does not give the negative z value as for the marking scheme only the 29.0 value gives the negative but from ur working both z values for 30 and 29 gets a negative sign? :S
  4. S

    Mathematics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_s10_qp_61.pdf Q3 can someone please explain why the second "z" value is negative? how do we know when the z value has to be negative or positive? PLEASE helpp :(
  5. S

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s11_qp_22.pdf Can someone pls help me with Q1-b(ii)&(iv) and C(i)
  6. S

    Chemistry: Post your doubts here!

    H2SO4 - mineral acid NaOH - mineral alkalie I dont know the exact definition of mineral acid but my book states the above acids as "mineral" during reactions.
  7. S

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w11_qp_21.pdf 5b(ii) can someone please draw the structural formula of the compound for me i dont understand the skeletal :/
  8. S

    Chemistry: Post your doubts here!

    oh yea, didnt notice that lol thanks :D
  9. S

    Chemistry: Post your doubts here!

    3 bond pairs with 1 lone pair would be triangular pyramidal - 107. I havent come across 2 bond pairs with 1 lone pair as 2 bond pairs and 1 lone pair would give 6 electrons not a complete 8
  10. S

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w10_qp_23.pdf 4b(ii) --> how does the elimination reaction produce "ethane" doesn't elimination produce alkene? :/
  11. S

    Chemistry: Post your doubts here!

    Can someone please please explain to me instantaneous dipole - induced dipole and permanent dipole-dipole forces please explain how do we identify the compounds which has either of the two forces of attraction like how do we know when a compound has permanent or induced dipole? I'm soo lost when...
  12. S

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w09_qp_22.pdf 3d someone? pls explain
  13. S

    Chemistry: Post your doubts here!

    thankss :D
  14. S

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w09_qp_21.pdf can someone pls tell me how do you know the product in q5 b(iii) "identify J" and how to draw the structural formula in c Thanks :D
  15. S

    Paper 6: Probability and Statistics 1 (S1)

    can someone please help me out with stats http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s05_qp_6.pdf No. 6(ii) plss explain someone http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics...
  16. S

    statistics doubt

    http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s05_qp_6.pdf No. 6(ii) plss explain someone http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s07_qp_6.pdf No. 3a Why is the Z value...
  17. S

    Statistics (S1) Post your doubts here

    Also if someone has notes on permutations and combinations plssssss upload them. I find it sooo hard to do them questions. :(
  18. S

    Statistics (S1) Post your doubts here

    Hi guys i thought ill make a thread for S1 paper as i couldn't find a thread for stats 1. So post your doubts here and please help me solve mine!!! Lol if someone could please help me with question no 6(ii) P6 s05...
  19. S

    Chemistry P31 - enthaply calculations help?

    pleaseee someonee, notes, tips anythingg? pleasee
  20. S

    Chemistry P31 - enthaply calculations help?

    Can someone plss plssss plssss give me notes on calculations for enthaply as well as titration plsssss but most importantly enthaply notes, i do not know how to work them out at all :/ PLEASEEE
Top