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  1. Jiyad Ahsan

    Mathematics: Post your doubts here!

  2. Jiyad Ahsan

    Mechanics M1: Post your doubt here

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20%289709%29/9709_s12_qp_41.pdf Q4(ii), it says in the ms that direction changes at 12 secs.. how do you calc that? i cant seem to get it
  3. Jiyad Ahsan

    Chemistry Paper 4-theory- doubts =D

    ok guys i have m1 tomorrow so i'll be here after tomorrow.. iA theres so much to do....
  4. Jiyad Ahsan

    Paper 5 Tips !! :)

    lol hahaha
  5. Jiyad Ahsan

    Paper 5 Tips !! :)

    yaaarrr..... ok umm look at it this way.. say you found that at a certain temperature (say 40 degrees) from your best fit line the solubility of a crystal is 10 (for the heck of explaining !) and so if you have to calculate solubility at 80 degrees you can safely multiply the solubility at 40...
  6. Jiyad Ahsan

    Paper 5 Tips !! :)

  7. Jiyad Ahsan

    Paper 5 Tips !! :)

    oui as in french for yes.. OMG a french speaking arabic :p
  8. Jiyad Ahsan

    Paper 5 Tips !! :)

    umm the line of best fit does not necessarily have to be a "straight line" it just has to show GENERALLY what pattern the results of an experiment follow..and it can be like a sort of an average line.. and neither does it have to pass 'most' points.. it should have an equal displacement of...
  9. Jiyad Ahsan

    Paper 5 Tips !! :)

    oh its like since the gradient of line is constant, umm if from your construction line you find that with one unit of x you have 2 units of y... so umm 2 units of x would give you 4 units of y. ( umm another way of saying it is like 'A man walks seven miles in two hours. What is his average...
  10. Jiyad Ahsan

    Paper 5 Tips !! :)

    dont give up do I ? :p i know i'm annoying
  11. Jiyad Ahsan

    Paper 5 Tips !! :)

    okay listen... go back to the ms.. not the appendix the place where its written "correctly calculates the ratio....." the place where it says "see appendix" look above it it says what ? "calculation MUST be to 2 decimal places"
  12. Jiyad Ahsan

    Paper 5 Tips !! :)

    look dont over-complicate stuff.. do what makes sense.. ALWAYS use the same number of sig.figs or decimal places as the information in the question UNLESS stated otherwise
  13. Jiyad Ahsan

    Paper 5 Tips !! :)

    give it to the same number of decimal places as the information given.. everything in the table is to 2 decimal places right? so give it to two decimal places
  14. Jiyad Ahsan

    Paper 5 Tips !! :)

    thats what im saying man... you dont have to give the answer to 4 significant figures.. give it to "2 DECIMAL PLACES !!!"
  15. Jiyad Ahsan

    Paper 5 Tips !! :)

    wait wait wait... where does it say you have to give your answers to 4 sig.figs !!?? its says 4 sig.figs in Q2.. not Q3
  16. Jiyad Ahsan

    Paper 5 Tips !! :)

    ^exactly, something of the sort
  17. Jiyad Ahsan

    Paper 5 Tips !! :)

    umm from what i've read quenching means to umm slow down or stop.. i guess
  18. Jiyad Ahsan

    Paper 5 Tips !! :)

    yes sir! whatever you say... hmm student student..
  19. Jiyad Ahsan

    Paper 5 Tips !! :)

    okay but umm which questions.. ?
  20. Jiyad Ahsan

    Paper 5 Tips !! :)

    okay i'll try to clear out the difference thing is you can use c1v1=c2v2 in both the difference being though, is that.. lets say you start out with a solution of say HCl of 10mol/dm^3 in serial dilution you take a volume of that solution say 10 cm^3 then you add 10cm^3 of water you have a...
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