Chemistry P31

[L-Girl]

the guys principal apparently sucks.... i got my info from my uncle working in the british council ...

you turn the marks on the paper to 100% and then you multiply by 2 to get your mark from 200
for example you got 40 out of 60 which is 20% from the whole syllabus in paper 6
and paper 3 you got 60 out of 80 which is 50% from the whole syllabus
and paper 1 you got 30 out of 40 which is 30% from the whole syllabus

you do (40/60 x 20)+(60/80 x 50)+(30/40 x 30) you will get 73.3333 out of 100 them multiply by 2 to make it out of 200 you will get 146.6666 which is a an A* (if you are variant one)

the gt for an A* for variant 1 in o/n 2011 session was 142 so you barely made it

here i explained everything http://www.xtremepapers.com/community/threads/how-cie-calculate-the-curve.15175/page-2


(it took me time to re-type this so plz like atleast and thank you )

THANK YOUUUUUUUUUUUUUUU <3 much appreciated

 

[raysonzaffar]

soft copy or hard one?

now here u go .....this is just chemistry !!!!!!!!!!!!!!!!!!!
http://www.xtremepapers.com/communi...y-3-physics-6-with-answers.16759/#post-296656
>>>>>>>>>>>>>> <<<<<<<<<<<<<<

 

[Osmix1995]

thnzx man......but y multiply.......is this a maths equation !!!!!!!!!!!!!!!!!!!!!!!!!!!

actually if you look at it in math way the whole world is made of equations!!

you can't just add your marks of the paper because each has a different weighing so that is what you do

 

[bluefa1con]

which reaction was exothermic??

condensation

 

[raysonzaffar]

i rote,vanadium in the first one and iron ind a second one..any1 thnks its ryt?

first one is zinc.......i guess,,,,,,,,,,,,n the second one is vanadium ...........i am sure abt this one ( Zinc pls confirm)

 

[JimmyCarter]

Fe2o3(OH)2

WHAT ?! i thot it was Fe2O3.XH2O and i got 2 for X

 

[L-Girl]

what is the type of reaction? substitution or photochemical?

 

[bluefa1con]

Again wait and see bro

haha ok what ever makes you feel better
i know its B but i dont care what you think when they have mentioned which one is losing electron on diagram
exams are over ( p1 doesnt count ) i am just gonna chill now
you should take a chill pill too

 

[raysonzaffar]

condensation

i dont noe.....wht hppnd to me........i wrote condensation ........then the final min. cut it off n wrote evaporation.. !!!!!!!!!!!!!!

 

[bluefa1con]

i dont noe.....wht hppnd to me........i wrote condensation ........then the final min. cut it off n wrote evaporation.. !!!!!!!!!!!!!!

sad bro
dont worry just relax you cant do anything now

 

[bluefa1con]

was it AgCl or AgCl2????

silver has variable oxidation state so both are correct
http://en.wikipedia.org/wiki/Silver

 

[L-Girl]

what is the type of reaction? substitution or photochemical?

 

[salvatore]

silver has variable oxidation state so both are correct
http://en.wikipedia.org/wiki/Silver

It clearly said silver (I) chloride.. so its AgCl

 

[bluefa1con]

It clearly said silver (I) chloride.. so its AgCl

yeah either way i wrote AgCl
and i dont memorize the questions during the exam

 

[Jigar]

tell me which question in 1994 which season ..........i hav the answer booklet frm 1993 onwards but not the questions !!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Hey sorry guys the paper i was talking about was just from a simple question bank from a revision booklet..............it was just written 1994..........so am not sure whether its igcse or another centre....................................But sure its there.......and ya the revision booklet is photocopyed so i dont have cover page...............

 

[Osmix1995]

first one is zinc.......i guess,,,,,,,,,,,,n the second one is vanadium ...........i am sure abt this one ( Zinc pls confirm)

no both are vandium i explained above i think page 10

 

[L-Girl]

so is it substitution or photochemical?

 

[raysonzaffar]

no both are vandium i explained above i think page 10

ya sorry forgot abt tht,,,,,,,,,i thought tht oxidant is the one oxidised

 

[raysonzaffar]

WHAT ?! i thot it was Fe2O3.XH2O and i got 2 for X

u r ryt................!!!!!!!!!!!!

 

[Saadiya Ahmed]

WHAT ?! i thot it was Fe2O3.XH2O and i got 2 for X

Yeah ur ryte...my ans is wrong!!