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NO WE HAVE TO DO IT WITH PEN!!!!!!!!!!!!!!!!!!!! I DID IT WITH PEN IN CHECKPOINT,IGCSE and ASnot with pen :/ we have to sign with pencil
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NO WE HAVE TO DO IT WITH PEN!!!!!!!!!!!!!!!!!!!! I DID IT WITH PEN IN CHECKPOINT,IGCSE and ASnot with pen :/ we have to sign with pencil
abe tuje pagal kutte ne kata hai we have to do with pencilNO WE HAVE TO DO IT WITH PEN!!!!!!!!!!!!!!!!!!!! I DID IT WITH PEN IN CHECKPOINT,IGCSE and AS
ap koh kata hai we have to do with penabe tuje pagal kutte ne kata hai we have to do with pencil
I did the same.Lol idk my invigilator always tells us to bring pen and sign and then only use pencil
Gujrijaabe tuje pagal kutte ne kata hai we have to do with pencil
nahi nahi ji! pencil se karna he!ap koh kata hai we have to do with pen
tu marja :/ sale pinky ne to humko bola tha ki sign with ONLY pencilGujrija
:/ Anyways, I did it with pen.tu marja :/ sale pinky ne to humko bola tha ki sign with ONLY pencil
:/ Anyways, I did it with pen.
2b)http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w08_qp_4.pdf
Hey guys, how to do Q2(b)?? I dont understand..
s08qp1Guys help me with q.no 2 and 15!
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s08_qp_1.pdf
HELP PLEASE IONIC EQUILIBRIA QUESTION:
Lake water contains dissolved sodium carbonate and sodium hydrogen carbonate. The following equilibrium exists:
HCO3- (rev sign) H+ + CO32-
[CO32-]/[HCO3-] = 0.958
When 10cm3 of lake water were titrated with 0.2mol/dm3 HCl, 22cm3 of acid were required to neutralise all the carbonate and hydrogen carbonate ions according to the following equations:
H+ + HCO3- (forward sign) H2O +CO2
2H+ + CO32- (forward sign) H2O +CO2
Calculate the total number of moles of acid used, and thus, by using the ratio quoted, calculate [CO32-] and [HCO3-] in the lake.
O bahi we have to do it with pennahi nahi ji! pencil se karna he!
bhai! pencil se :/O bahi we have to do it with pen
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