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  1. A*(a*)

    Chemistry: Post your doubts here!

    the greater the carbon content (C %) the higher is the energy evolved! Alcohols have less percentage of Carbon than Alkenes, so they produce less energy.
  2. A*(a*)

    Chemistry: Post your doubts here!

    boiling point is determined by forces between molecules, The H-F bond doesn't break at all! The forces (hydrogen bonding ) BETWEEN THE MOLECULES break!
  3. A*(a*)

    Chemistry: Post your doubts here!

    question 1, 1 mole = 6.02*10^23 particles n(H atoms)= mass/ Mr * 2 ( multiply by 2 since we are talking about atoms not molecules) =1/2 *2 =1 mole=6.02*10^23 Only option C has 1 mole Neon ATOMS! which is equal to 6.02*10^23 atoms! I hope I didn't confuse u, right?
  4. A*(a*)

    Chemistry: Post your doubts here!

    thanks Yes A is the answer, another forum member told me that in eq1 H2SO3 forms which decomposes to products stated, this is correct i guess .
  5. A*(a*)

    Chemistry: Post your doubts here!

    Its okay guys :) I thought that with the word redox, we were supposed to see that whether nitrogen undergoes reduction and oxidation both... which is the case in disproportionation
  6. A*(a*)

    Chemistry: Post your doubts here!

    Thanks for your help but according to your answer doesn't N undergoes 'reduction'? Isn't there any difference in reduction and redox? I guess the question is about disproportionation?
  7. A*(a*)

    Chemistry: Post your doubts here!

    And can anyone on Earth tell me what am I missing in this question? The refrence is 9701/12/M/J/11 [ U can check the markscheme, the answer is A. How is 1 correct ?!!!
  8. A*(a*)

    Chemistry: Post your doubts here!

    your answer is correct. May God bless you, thankyou soo much - I never knew H2SO3 can decompose like this! According to examiner how am I supposed to know this? Which topic is it related to? :/
  9. A*(a*)

    Chemistry: Post your doubts here!

    Can you help me doing this question?
  10. A*(a*)

    Chemistry: Post your doubts here!

    hahahah thats true , seriously I never felt such pressure before. I knew this too :P They can be aqueous too :P
  11. A*(a*)

    Chemistry: Post your doubts here!

    hahahah I am really sorry , Question STATES that it IS gaseous :P Well another related question - Are always ions gaseous?
  12. A*(a*)

    Chemistry: Post your doubts here!

    Can you answer this also please? Its from the same year and variant is 13.
  13. A*(a*)

    Chemistry: Post your doubts here!

    Thankyou so much :) but how can we be so sure in assuming that Na+ is gaseous?
  14. A*(a*)

    Chemistry: Post your doubts here!

    Can you answer the question posted above please?
  15. A*(a*)

    Chemistry: Post your doubts here!

    O/N 11/12 question 3 Can anyone who is good in chemistry solve this? Use of the Data Booklet is relevant to this question. From which particle is the removal of an electron the most difficult? A Cl- (g) B F- (g) C K+ (g) D Na+ (g)
  16. A*(a*)

    haha .. that reminds me of the purpose I am on this forum! :)

    haha .. that reminds me of the purpose I am on this forum! :)
    • A*(a*)
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  17. A*(a*)

    CIE Physics textbooks

    Thank you soooooo much :) May God bless you :)
  18. A*(a*)

    CIE Physics textbooks

    Where is the source data? I can't see it.
  19. A*(a*)

    AS-CHEMISTRY TOPICAL FINALLY HERE

    May God bless you for this :)
  20. A*(a*)

    CIE Physics textbooks

    What else (except answers to end-of chapter questions) is there in it? and from where did u get it?
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