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  1. S

    Chemistry: Post your doubts here!

    Use of the Data Booklet is relevant for this question. In an organic synthesis, a 62% yield of product is achieved. Which of these conversions are consistent with this information? 1 74.00g of butan-2-ol → 44.64g of butanone 2 74.00g of butan-1-ol → 54.56g of butanoic acid 3 74.00g of...
  2. S

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w10_qp_12.pdf Q34..after 20 mins rxn is complete..mass of mg used is same so how can sukfuric acid produce more gas? statement 3 is correct according to ms..how?
  3. S

    Chemistry: Post your doubts here!

    umm but it sayd use oxidation numbers for 13.so im sure there is a way other than trial n error
  4. S

    Chemistry: Post your doubts here!

    thank you so much bro! im so glad you took out so much time to help me out :)
  5. S

    Chemistry: Post your doubts here!

    A triple bond consists of one π bond and two σ bonds...is this statement true or false?
  6. S

    Chemistry: Post your doubts here!

    guys..meanwhile he's looking for an image can u help me out with these two! theyre difficult! :/ http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w10_qp_12.pdf Q8 n 13 please!!
  7. S

    Chemistry: Post your doubts here!

    another image please.! :(
  8. S

    Chemistry: Post your doubts here!

    it says C4H8..so where the pent 2 ene and pent 1 ene isomers come form? sorry im going a little crazy here :/
  9. S

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w10_qp_12.pdf Q8 n 13 please!! i guess its the umpteenth time im posting these!
  10. S

    Chemistry: Post your doubts here!

    i'd be glad if you do :)
  11. S

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w10_qp_12.pdf Q13
  12. S

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/... AS Level/Chemistry (9701)/9701_w10_qp_11.pdf Q29
  13. S

    Chemistry: Post your doubts here!

    i really dont get it..so never mind. any idea how to do Q13 of http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w10_qp_12.pdf
  14. S

    Chemistry: Post your doubts here!

    oh God. plz see the question. it says additional isomers. if you switch the positions of CH3 and H it will form a cis trans isomer!!
  15. S

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w10_qp_12.pdf Q8!! http://www.xtremepapers.com/papers/... AS Level/Chemistry (9701)/9701_w10_qp_12.pdf Q4..im getting + 101..how is it -ve..??
  16. S

    Chemistry: Post your doubts here!

    no..what i meant was that the compound they"ve shown has cis trans isomers. other STRUCURAL isomers are but 1 ene and but 2 ene due to the different position of double bond.
  17. S

    A 2 Physics HELP !!! (TIPS, EXAM TYPICAL QUESTIONS AND DISCUSSION)

    do you have the answers to end of chapter questions and exam style questions?
  18. S

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w10_qp_12.pdf Q4..im getting + 101..how is it -ve..??
  19. S

    Chemistry: Post your doubts here!

    yeah all of them have a double bond..cis trans, but 1 ene and but 2 ene... anyone else who understands why the answer is 3?
  20. S

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w10_qp_11.pdf Q29..but-1-ene , but-2-ene, cis,trans. that makes it 4 isomers? why is the ans 3? Are they considering cis trans as one? if so,then why?
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