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Recent content by oalevel2020

  1. O

    Save My Exams classified Answers (FREE)

    Can you please send me A2 level Biology and Chemistry? [email protected]
  2. O

    Need key book/solution book for Pure Mathematics.

    Bro, I visited the link but there is not the new edition that I am looking for.
  3. O

    all cie full textbooks available in pdf format

    Could anybody please upload the following books in pdf : 1. Cambridge International AS & A Level Mathematics: Probability & Statistics 2 COURSEBOOK 2. Cambridge International AS & A Level Mathematics: Mechanics WORKED SOLUTIONS MANUAL Thank you in advance.
  4. O

    Need key book/solution book for Pure Mathematics.

    Could anybody please upload the following books in pdf : 1. Cambridge International AS & A Level Mathematics: Probability & Statistics 2 COURSEBOOK 2. Cambridge International AS & A Level Mathematics: Mechanics WORKED SOLUTIONS MANUAL Thank you in advance.
  5. O

    all cie full textbooks available in pdf format

    Does anybody have CIE Pure Mats 1 Coursebook?
  6. O

    Need key book/solution book for Pure Mathematics.

    I also need it. please upload if anybody has. Thank you.
  7. O

    Maths Notes (P1, P2, M1, M2 and S1)

    P1: http://www.sendspace.com/file/3sgv9o P2: P3 http://www.mathsrevision.net/alevel/pure/ http://studyguide.pk/?page_id=116 M1: http://www.mathsrevision.net/alevel/mechanics/index.php http://www.sendspace.com/file/h1l7qb (this one is very good) M2: S1: I am really sorry to inform you...
  8. O

    Save My Exams classified Answers (FREE)

    Can you send me CIE O Level Physics, Chemistry and Biology answers please fro Paper 1, 2, 4 for Physics and chemistry and Paper 1, 2, 6 for Biology My email: [email protected]
  9. O

    Edexcel IGCSE | IAL January 2017 Question Papers

    Can anybody give me Edexcel IGCSE and IAL January 2019 Question Papers and Mark Schemes?
  10. O

    Chemistry, Physics, Biology: Post your doubts here!

    Thank you for your reply. Firstly, why LiAlH4 behaves like this? Secondly, what's the difference between its mode of action and that of NaBH4?
  11. O

    Chemistry, Physics, Biology: Post your doubts here!

    Can LiAlH4 reduce both C=O and C=C? Why or why not? Can you please explain? Thank you in advance.
  12. O

    Chemistry: Post your doubts here!

    Can you please send me the notes? Thank you in advance.
  13. O

    Chemistry: Post your doubts here!

    -------------------------------------------------------------------------------------------------------------------- I think there is a mistake in the above answer: The total volume will be 0.035 L (0.02 L + 0.015 L) Concentration of H+ = 0.0010/0.035 = 0.02857 M pH = -log (0.02857) = 1.54 (Ans)
  14. O

    Chemistry: Post your doubts here!

    n(KOH) = 0.001 mol; n(CH3COOH)=0.01025 mol. They react in 1:1 ratio, so after neutralisation moles of ethanoic acid left = 0.01025 - 0.001=0.00925 mol. So [ethanoic acid] = 1000*0.00925/35 = 0.2643 mol/dm3. After reaction, moles of CH3COOK produced is 0.001 mol. So [CH3COOK] = 1000*0.001/35 =...
  15. O

    Chemistry: Post your doubts here!

    9701/41/M/J/17 Q6(d)(i) In the Proton NMR spectrum of 1-phenyl-ethan-1-ol, C6H5CH(OH)CH3 would the -CH- have a peak at 2.7 ppm or at 4.1 ppm? In this compound -CH- is bonded to an aromatic ring at one end and to an electronegative O atom at the other end. So if -CH- is considered as an alkyl...
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