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  1. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    I don't have a Chemistry teacher that can answer that. :p
  2. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    Propene has 3 carbon atoms so it can't be branched from the middle. Well, I'll look at this matter and comment on it tomorrow. I think I am wrong. Apologies for the confusion.
  3. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    Yes. Since it is very volatile.
  4. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    That's what I said. Branched structure means that the carbon atoms are not bonded side by side, instead one of the chains goes upwards/downwards which makes it 'branched'.
  5. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    Look again, :) The CH3 is branched upwards not sideways, it means that the carbon and 3 hydrogen atoms are bonded upwards. P.S. The drawing is filthy. I'm no good at this paint business.
  6. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    :eek: :oops:
  7. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    This is what your graph should look like.
  8. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    Reflux is like recollection, it is used in distillation (or when boiling liquids), the vapors of the liquid are condensed and returned to the solution (this is called reflux), it prevents loss of any liquid from the container.
  9. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    :)
  10. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    You can make both. The propene is the unbranched structure of the compound whereas the propene 2 is the branced structure of the compound. They are isomers.
  11. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    I think almost everyone is taught component vectors in relative velocity. It's just about applying them correctly. Credits to Suchal Riaz for applying them in a Physics Mcq correctly.
  12. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

  13. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    (a) Zinc Hydroxide (ii) Zn (2+)(aq.) + OH (-1)(aq.) -----> Zn(OH)2 (s), the numbers in bracket show charge. (b) X is Zinc. Y is Zinc Nitrate , Zn(NO3)2 (c) The gas Z is Nitrogen Dioxide (brown color) Therefore, Mr = 12+(2*16) = 44 g/mol. (ii) NO2
  14. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

  15. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    P.S. I do not own any of the notes.
  16. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    Yeah, I got it. Simple enough (but the thought of applying component vectors in this question didn't occur to me). Good try! Haris Bin Zahid also solved this with another method. Logically, both methods are right. Well done, geniuses. ;)
  17. Saad Mughal

    Dekha Haris. Sbko pata hai.

    Dekha Haris. Sbko pata hai.
  18. Saad Mughal

    Sbko pata hai. Haris.

    Sbko pata hai. Haris.
  19. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    A is the answer. We make ammonium salts and group 1 salts using titration.
  20. Saad Mughal

    Hello.

    Hello.
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