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Search results
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Chemistry and Physics some Keypoints/Notepoints (onDemandOnly) !! :)
oh so did i provide u with a clear explanation or not still? and u r welcomed! -
Chemistry and Physics some Keypoints/Notepoints (onDemandOnly) !! :)
oh this... you need to know that one mole of electrons carry a charge of 96 500C. so farady unit can be expressed as 96500C/mol. we use this with the equation Q=IT to see the mass of whatever that has been produced on the electrode during electrolysis. take the first example in the "worked... -
Chemistry and Physics some Keypoints/Notepoints (onDemandOnly) !! :)
what do u mean? can u show an example ? -
Chemistry and Physics some Keypoints/Notepoints (onDemandOnly) !! :)
ohh..would of been better if all included in one thread because past paper questions explained will help ppl who read it as a revision too i see -
Chemistry and Physics some Keypoints/Notepoints (onDemandOnly) !! :)
is this thread for past paper questions that we have doubts in too or only for topic questions ? -
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Mathematics: Post your doubts here!
hey can someone pls show me a sketch of how to find the max value of arg z in this question 7(iii) i really wanna see a sketch not just word explanation..thanks a lot !! http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_w03_qp_3.pdf -
Mathematics: Post your doubts here!
what year is this? pls when posting question post the paper so i can check the mark scheme after solving it to make sure i am not giving u the wrong answer! -
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Chemistry Paper 4-theory- doubts =D
because carbon hasn't got a free d-orbital subshell where it can accept a water ligand right? -
Chemistry Paper 4-theory- doubts =D
thats what we needed thanks for adding me..lets kick some ass ( paper 4) we r da AL chem team ;) -
Mathematics: Post your doubts here!
integrate ∫1/2(cos 2x - cos 4x) dx 1/2∫cos 2x - cos 4x dx = 1/2[-sin2x/2 + sin4x/4] = -1/4 sin 2x + 1/8 sin 4x now sub the values of x and u will get the answer given -
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Mathematics: Post your doubts here!
oh sorry i just read this post after i replied..anyway u r welcome ! -
Mathematics: Post your doubts here!
nope thats the method..u put x on one side and y on the other side thats the separate integrals and thats what i did see.. 1/x dx = y/(y^2+4) dy u still dont get it ? -
Mathematics: Post your doubts here!
Farru here u go! dy/dx = (y^2 +4)/xy dx/dy = xy/(y^2 +4) 1/x dx/dy = y/(y^2+4) 1/x dx = y/(y^2+4) dy ∫1/x dx = ∫y/(y^2+4) dy i think u know how to integeate..if not tell me and i will teach u too but here is the rest ln x = 1/2ln(y^2+4) + c sub the values of x and y and u will get c =... -
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Mathematics: Post your doubts here!
can u show me the question pls ? -
Mechanics PAPER 5 (not AS): Post your questions
paper 4 is AS and paper 5 is A2 -
Chemistry Paper 21 discussion
hubbaaaaaa what was the difference in the boiling point? is it the van der waal or what ?