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  1. xIshtar

    Physics Paper 3 Help !

    Well you need to explain how modifying R1 will affect the temperature at which the lamp switches on.. You don't write you should use a potential divider, as it is already in use. You need to relate the change in R1 to the rest of the circuit. Ie, as V=IR, if you reduce R it will reduce the...
  2. xIshtar

    Chemistry doubts..ask here!

    Not important for paper 6. This is just a guess here, but maybe a dehydrating agent just removes water? I have no clue.. I know that Sulphuric acid is a drying agent for gasses. Leave it for three hours, then simply run a finger along it? As it says touch dry.
  3. xIshtar

    chemistry doubt p6!!

    As Ammonia is less dense than air, it should be collected the other way round.. Also, as the acid is a drying agent, the first tube rather than the second should be passing through it. Hope I helped (:
  4. xIshtar

    Want bio p31 answers ? (ask here)

    The question was only in variant 1? And it did ask for organs..
  5. xIshtar

    Want bio p31 answers ? (ask here)

    I wrote that as well, except I forgot the epithelial, but remembered the diagram in past papers, so I put a wall of cells, which was correct in another paper :P
  6. xIshtar

    Chemistry Paper 62 discussion

    Thanks :D
  7. xIshtar

    chemistry doubt p6!!

    Link please.
  8. xIshtar

    Chemistry doubts..ask here!

    Yey, my description was right.. Polyamides and polyesters are okay to draw, it's when we have to identify reactants that I'm stumped ¬¬
  9. xIshtar

    Chemistry Paper 62 discussion

    Oh I love it when we have a good exam :D Can't wait to do mine now.. 4 hours to go :D
  10. xIshtar

    Chemistry ATP (Important points for Both IGCSE and O-level)

    It is one possible test, but a lit splint which burns is also one..
  11. xIshtar

    physics help please!!!

    Thanks, you too :D
  12. xIshtar

    physics help please!!!

    :D
  13. xIshtar

    Want bio p31 answers ? (ask here)

    I put colon.. It's wrong. If you check the table, the small intestine had the most water leaving the alimentary canal, and from knowledge it is the small intestine too, as it absorbs more water.. Don't get into an argument again, if you still believe you are right, then you are entitled to, but...
  14. xIshtar

    Chemistry doubts..ask here!

    Wow, haven't ever seen it in paper six.. Basically, amine bond in amino acids etc is NH2 I believe, and the amide bond in polyamides is NHC=O, from the top of my head. I haven't gone over polymers in a while, it's been all about other subjects, but now it's chemistry time :D
  15. xIshtar

    Tips for Exam Success =))

    Good tips, you're right about the confidence thing before and exam, happened to me so many times.. I probably do all of the above, except for praying, as I am atheistic. No offence to Allah though, everyone has their beliefs.. :D
  16. xIshtar

    physics help please!!!

    No problems... Good luck in Chemistry today haochen (:
  17. xIshtar

    physics help please!!!

    You see that it is a trapezium, and you know the distance is 100m.. So 8x3 = 24 /2 = 12 100 - 12 = 88 For the area of the trapezium = 1/2 (sum of parallel sides) x height So, h = 11.2, sum of sides = 8 + x 4 + x/2* 11.2 = 44.8 + 5.6x => 5.6x = 88 - 44.8 = 43.2 => x = 7.71m/s (3sf)
  18. xIshtar

    chemistry

    Hey, you've done 62? I know it's against the rules to discuss the paper, but did it go well? (Just don't refer to specific questions as I don't want to cheat or get banned :P)
  19. xIshtar

    I am back and wont leave you ,even if u mistrusted me

    Heh.. I just know carbonates don't need heating.. I don't know why oxides need heating :S
  20. xIshtar

    CHEM P6

    Heat isn't right, the heat should be on the salt.. The place where they were placed is right.
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