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  1. princessnoor

    Chemistry: Post your doubts here!

    r ryt!
  2. princessnoor

    Chemistry: Post your doubts here!

    f for q 40 In statement 1, 2 moles of ethanoic acid will react with 1 mole of calcium ion as charge on calcium is +2. So compound will be Ca(CH3CO2)2 which has empirical formula CaC4H6O4. In 2 and 3, both H from CO2H will be removed so empirical formula will be CaC4H4O4 and not CaC4H6O4.
  3. princessnoor

    Chemistry: Post your doubts here!

    but the answer to question 23 is c tht is 4 esters
  4. princessnoor

    Chemistry: Post your doubts here!

    ok
  5. princessnoor

    Chemistry: Post your doubts here!

    hey for how long u will b available today cuz i might hve some more questions nd u know tomorow is ppr
  6. princessnoor

    Chemistry: Post your doubts here!

    Also i dont get Qs 11 and 23 in this ppr http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s12_qp_13.pdf
  7. princessnoor

    Chemistry: Post your doubts here!

    t thanku
  8. princessnoor

    Physics: Post your doubts here!

    Speed=distance/time so we add the distance uncertainities tht is 1+1=2 and also add the time uncertainitie tht is 0.02+0.02=0.04 add then use fractional uncertainity formula tht is uncertainity/actual value I hope u get it?o_O
  9. princessnoor

    Chemistry: Post your doubts here!

    hey i found u here too:p can u help me with question 40 in this paper http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s13_qp_12.pdf
  10. princessnoor

    Physics: Post your doubts here!

    thanks
  11. princessnoor

    Physics: Post your doubts here!

    hey can u help me with question 34 in this paper http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_s11_qp_11.pdf
  12. princessnoor

    Physics p34 05 june 2014

    Thanku!
  13. princessnoor

    Chemistry Practical 34 GT

    hey which chem p1 r u giving 11 or 12 ? and whn is or was 11?
  14. princessnoor

    Chemistry Practical 34 GT

    how was ur paper huys was it hard or a piece of cake?
  15. princessnoor

    Physics p34 05 june 2014

    AstagfiruAllah if u cant say any good than dont say anything please and those who pray bad for others will suffer thmselve muslim brother !
  16. princessnoor

    Physics p34 05 june 2014

    decomposition of nitrates or carbonates, loss in mass is expected disappearance of writing due to precipitate formation also expected graph plotting of rate of reaction will also come ions identification may include zinc, aluminium, lead nitrate sulphate i got this info from some thread
  17. princessnoor

    Chemistry 9701

    thts ok
  18. princessnoor

    Chemistry 9701

    litreally WhtEVR!!!!
  19. princessnoor

    Chemistry 9701

    oh u r very welcome
  20. princessnoor

    Chemistry 9701

    oh well then thts GOOD!!
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