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  1. L

    Chem P51 How was it?.

    i got 0.088
  2. L

    Chem P51 How was it?.

    yay! ;) and what was ur gradient?
  3. L

    Chem P51 How was it?.

    i did something like that tooo, i kept the final volume constant, and varied volumes of water and CuSO4, but the thing is that there was no water given!! :(
  4. L

    Chem P51 How was it?.

    umm maybe?! for jun 2011 it was 20 and it was easier than this one, so it can be lower than 19 i think... how was ur paper?
  5. L

    Chem P51 How was it?.

    AND THERE WERE NO BLANK PAGES!! what do u expect the threshold to be???
  6. L

    Chem P51 How was it?.

    OMG were we supposed to draw stuff?? i just wrote
  7. L

    Chem P51 How was it?.

    i used water to change the concentration and so did my friends :S anddd i expect the threshold to be around 19-21!!
  8. L

    Chem P51 How was it?.

    yes it was a very easy paper...but i messed up queation 1!! there was so little space given :@
  9. L

    Chemo P5 tips

    ur welcome
  10. L

    Chemo P5 tips

    nope...if the points are going in a curve path, then u have to draw a curve ofcourse
  11. L

    Chemo P5 tips

    it can come in bio :D
  12. L

    Chemo P5 tips

    independent variable is what u've got on the x-axis i.e. u change it dependent varaible is what u have on the y-axis, it varies with the independent vaireable
  13. L

    Chemo P5 tips

    depends.... if the points are in a curve shape, u hav to draw a curve of best fit and if the points come in a staright line, then u have to make a staright line of best fit...
  14. L

    Chemo P5 tips

    its obvious :P the one which goes from 20-65 is the curved one AND MAKE SURE U LABEL UR AXES!!!
  15. L

    Chemistry paper 5 queries

    no they dont ask for percentage solubility so no need to multiply it by 100...otherwise the formula is correct :)
  16. L

    Chemo P5 tips

    its a curve and a straight line. the point of intersection will be around 67 0C
  17. L

    Chemo P5 tips

    250cm3 beaker 100cm3 conical flask 16cm3 test tube 25cm3 boiling tube 100cm3 graduated gas syringe 0-100 degree Celsius graduated thermometer
  18. L

    P5 chemistry..help

    mass of solute in saturated solution/mass of water in saturated solution *100
  19. L

    P5 chemistry..help

    the formula is given so need need to worry for that. IN CASE something happens... percentage solubility is mass of solid in saturated solution divided by mass of water n saturated solution * 100
  20. L

    Chemo P5 tips

    1 molar= Mr in 1000cm3 for e.g the mass used here is Pb(NO3)2 ......this question came in O/N 10 so, 1 molar of Pb(NO3)2= Mr of Pb(NO3)2 in 1000cm3 1 molar = 331 0.1 molar = x u cross multiply and get x as 33.1 then, 33.1= 1000cm3 x= 250cm3 cross multiply and u'll get x as 8.3g mix 8.3grams...
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