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This recent years is kinda tough.. Like year 2010. Dont you agree diwash ?

Re: Chemistry p4! but I got positivee. Can you show your working please...

I need help in this question June 02 paper 4. I dont get it why there is no reaction in 4C(i) I calculate the E cell value it is positive so it should be there is a reaction. I attached you the question paper http://www.xtremepapers.me/CIE/Internat ... 2_qp_4.pdf

thankz! now I get it :) cheers

Why dont we make the Xtremepapers more attractive rather than other red and black why not brighter. That should do it. :) Just a suggestion ...

I know that but how to know the end point is at 40cm3 like in the marking scheme?? Help me out

Here you go : 2) When a solute is added to two solvents, A and B, which do not mix, some of the solute dissolves in each of the solvents and an equilibrium is set up between the two solvents. At equilibrium the ratio of the two concentrations is a constant known as the Partition...

Paper 53 November 2010 . Question 2(c) http://www.xtremepapers.me/CIE/Internat ... _qp_53.pdf I drew the graph already.. however I dont know how to suggest an error in the conduct of the experiment which causes the anomalous result? Can anybody tell me what to suggest? ASAP

Hey guys can you help me how to do 1(d) from June 02 chemistry p4 here I attached the question paper to make it easier. I know the graph is going to be decreasing from PH 11.3 to 1 but how to find the ' end point' ... Please help me .. http://www.xtremepapers.me/CIE/Internat ... 2_qp_4.pdf

Re: Tonnes of problem in P5 Chemistry ! Please help me b4 ex Aww too bad! would like to chat with you to know more on chemistry. Since I dropped physic hahaa.. and start loving chemistry now! :) :) Hope you will add me in one of the email I send to you. Because I m sure I will have tonnes of...

Re: Tonnes of problem in P5 Chemistry ! Please help me b4 ex I try to do the question back again, however I dont understand how is it to calculate number of moles of succinic acid divide by 2? isn't it suppose to be times 2 ? since 1:2 , as Expt 1 as an example: no of mols of NAOH =...

Re: Tonnes of problem in P5 Chemistry ! Please help me b4 ex Thankz Xarak ! You are the best! ThannkSSS :) :)! I havent look onto the paper 5 questions for a while now after I have difficulties on the questions I posted. In a few minutes I will try to do again with your guidelines hopefully...

I need help paper 5 chemistry 9701 Nov10/53 question 2(a) , how to find the concentration of the succinic acid in each layer by the given data in the table??? June 07 question 1(d) , can anybody show or explain me what are the proper ways to...

diwash pm me your yahoo address :)

Thanks diwash, I realize that my graph I plotted was slightly wrong, i got my gradient 0.31627 around 0.6 approx 0.5 so should be correct. Thanks! :)

Hahaha ok ok ... we dont usually do that wayy at least now I know :) !

According to the marking scheme ' Construction (lines) on graph and values read from the graph (with units) ' So I m not sure too whether is correct or not :S Can anyone help us ?

But dont u have to draw lines in the graph and takes the gradient from the graph itself. Not from the table?

Diwash I tried using y axis as copper oxide as y axis and copper(II) carbonate at x axis . I got the answer. But according to the marking scheme by using Mass loss in the expt/g in the y axis and mass of cu(II)carbonate in the x axis still can get the answer. But I couldn't. Can u try to do...

Diwash, I have check my papers. Instead of the answer u given, I have plotted Mass loss in the expt/g in the y axis and mass of cu(II)carbonate in the x axis. I got my gradient as 0.2791 .. Then I m stuck to do the next step. Please help me