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  1. S

    Chemistry: Post your doubts here!

    Oh that explains , thanks a lot for the help :D jazak alALLAH 5er
  2. S

    Chemistry: Post your doubts here!

    Can someone please help with p34 Oct/Nov 2012 question( g) I didn't know how to find the mean :S
  3. S

    Chemistry: Post your doubts here!

    what you wrote is the structural formula and the skeletal formula is completely different :p
  4. S

    A level Biology: Post your doubts here!

    Use this formula:volume of solute =(required concentration/initial concentration )* the total volume of solution . In your case the required concentration is missing , so if we put all the values given in the formula then solve it , we get the required concentration with a value of 6.25% ...
  5. S

    A level Biology: Post your doubts here!

    YES it's half the smallest division on the instrument used for measuring
  6. S

    A level Biology: Post your doubts here!

    Really thanks a lot :) but I'm confused if they give me a slide should my drawing be proportional to it??
  7. S

    Chemistry: Post your doubts here!

    What is the formula for maximum percentage error in any apparatus?
  8. S

    A level Biology: Post your doubts here!

    Can some one please check if this plan diagram is correct?The real image is in this link :http://www.wesapiens.org/class/2843005/file/9/Lung%2C+Transition+between+bronchiole+and+terminal+bronchiole and this is my image :
  9. S

    A level Biology: Post your doubts here!

    What is the formula for maximum percentage error in any apparatus?
  10. S

    Chemistry: Post your doubts here!

    allasalamu allaykom ,Can some one please help in paper34 Oct/Nov 2012 question 1c? I have no clue how to calculate the concentrations
  11. S

    Chemistry: Post your doubts here!

    How can prepare for the practical exam at home ?
  12. S

    A level Biology: Post your doubts here!

    Hey , alsallamu alaykom ,What are the most common things I should be practicing drawing plan diagrams on?
  13. S

    A level Biology: Post your doubts here!

    What if there was middle lamella in between?
  14. S

    A level Biology: Post your doubts here!

    What purple areas?
  15. S

    A level Biology: Post your doubts here!

    Naah you pick five , because each point is for one mark :p
  16. S

    A level Biology: Post your doubts here!

    I read in my book that amino acids are transported in the root nodules to the xylem , how is that? and I thought the xylem only transports mineral ions and water
  17. S

    Mathematics: Post your doubts here!

    It's absolutely okay :) thanks for your concern :)
  18. S

    Mathematics: Post your doubts here!

    It's absolutely okay :) thanks for your concern :)
  19. S

    Mathematics: Post your doubts here!

    Can you please answer my question above :/?
  20. S

    A level Biology: Post your doubts here!

    The proteins to be processed or exported to the cells , their growing chain of amino acids made at the ribsomes on the RER is moved to the cristae of the RER . The cristae then breaks off , forming small vesicles that are transported to the Golgi apparatus , where the protein is modified , by...
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