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*Biology Paper 5 tips*
How do u draw the histogram from may june 2007 paper 5 question 1 a) Do u do the same as in maths, to calculate the frequency density? -
Mathematics: Post your doubts here!
Salaam Alaykum, Please help: Esme noted the test mark, x, of 16 people in a class, she found that Σ x= 824 and that the standard deviation of x was 6.5 i) Calculate Σ (x-50) and Σ (x-50)² ii) One person did the test earlier and her mark was 72. Calculate her new mean and standard deviation of... -
Statistics 1: Post Your Doubts Here
Salaam Alaykum, Please help: Esme noted the test mark, x, of 16 people in a class, she found that Σ x= 824 and that the standard deviation of x was 6.5 i) Calculate Σ (x-50) and Σ (x-50)² ii) One person did the test earlier and her mark was 72. Calculate her new mean and standard... -
Chemistry P41 How was it?
I have done so many silly mistakes in this paper. -
Chemistry Paper 4-theory- doubts =D
Salaam alaykum, Can someone please help me with balancing a equation using oxidation numbers please. -
Chemistry Paper 4-theory- doubts =D
S/a, Hope all good Can someone please help me understand the degenerate and non-degenerate part of the transition metals. -
A level Biology: Post your doubts here!
Asalaam alaykum, can anyone please help me with crop plants, i dont understand the different parts of the endosperm and all. Please anyone who has good notes on this, please please please post it, the Biology book i have doesn't have a lot of information on this. Please anyone. I beg of you... -
Chemistry Paper 4-theory- doubts =D
Just use chemguide.co.uk/cie to revise from. ;) -
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Chemistry Paper 4-theory- doubts =D
Oh okay.. I it makes sense a little. :) And i thank God i don't do physics. Btw have you seen any questions on this topic.. Like not to identify the compound present, but like on this introduction part? -
Chemistry Paper 4-theory- doubts =D
I don't see. They are talking about peaks, i want to know about the other NMR, like the introduction. -
Chemistry Paper 4-theory- doubts =D
S/a once again. Can anyone please help me with NMR. I don't get the part in the apps booklet when it talks about the difference in the energies and the 'spin +1/2 aligned' and the 'spin-1/2 opposed' and the Planck equation. It makes no sense to me AT ALL! :(:cry: -
Chemistry Paper 4-theory- doubts =D
I do Biology so the first app topic on DNA and all is fine, same with electrophoresis but the Mass spectra and NMR i need to do. I would suggest using www.chemguide.co.uk/cie. -
Chemistry Paper 4-theory- doubts =D
Hello people. Salaam alykum, How did you guys revise for applications, did you read the booklet? Cause it has soo much information that is unnecessary! -
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Chemistry Paper 4-theory- doubts =D
it has the A2 Application topics, like dna stuff, electrophoresis, NMR, mass spectra. -
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Chemistry Paper 4-theory- doubts =D
I It's not there i just checked. the applications booklet that has 'applications of analytically chemistry' and all -
Chemistry Paper 4-theory- doubts =D
Salaam alaykum, Does anyone have a copy of the applications booklet. Please could someone upload for me. Please. Thank is advance