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nahi nahi ji! pencil se karna he!ap koh kata hai we have to do with pen
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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
Edexcel or Cambridge ?Im starting AS level Which book shall you recommend for me in order to get A*
Cambridge AS ChemistryEdexcel or Cambridge ?
the new editionIm starting AS level Which book shall you recommend for me in order to get A*
For CIE use chemistry course book by Roger Norris.Cambridge AS Chemistry
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