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chem p5 urgent doubt
pls when you do it don't forget to share ur answers with me cuz i couldn't do it..its so hard! -
Chemistry: Post your doubts here!
i checked fajans law..not even a single sentence about it in my chemistry textbook (endorsed by Cambridge) so i don't think we will need to know that -
Chemistry: Post your doubts here!
farjans law? excuse meeeeeee??? what is dat? :O -
chem p5 urgent doubt
thats the correct transition temp. btw check may june 2010 question 1 paper 52..its a very hard experiment i am not getting it :s if u know how to do it i will be glad if u can help me -
chem p5 urgent doubt
hey..if u r having troubles with the graph too check this thread out i posted a graph there of this question https://www.xtremepapers.com/community/threads/chem-p5-urgent-doubt.25192/ -
Mathematics: Post your doubts here!
alright man first of all you have to expand (1+ax)^6 using the binomial theorem ( i guess u have learnt that as it is part of ur syllabus) but not all of it like expand it up to the term x^3 onlyyy then expand (1-2x)^2 and multiply it with the answer u got when u did the binomial theorem..once u... -
Mathematics: Post your doubts here!
how man..u dont know how to multiply 2 brackets..like for example u never ever multiplied (1+3x)(1+2x)..i dont think so :S -
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chem p5 urgent doubt
i have done this question correctly..believe me the solubility can be greater than one hundred and the graph i did is perfect even with 2 lines one at lower temperature and one at higher and they intersected at a temp of 67.5..if u dont wanna believe that the solubility can be greater than 100... -
chem p5 urgent doubt
yes, its ok u will get all the values above hundred thats not wrong -
chem p5 urgent doubt
what do u mean by u can't get the solubility? can u find the mass of solid and the mass of water? -
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Mathematics: Post your doubts here!
do loaaadsss of past papers and the most important thing is to make ur answer to 3 sig. figures because they r so strict on giving final answers to 3 sig figures so imagine u have 11 questions and in every question u lost that A1 mark because ur answer is not to 3 sig figures that means u lost... -
Chemistry: Post your doubts here!
it is "kind of" a known reaction, specially with aldehyde when u get 2 identical ketones or aldehydes and the question says the compound formed contains an OH group then use it as a hint that these 2 ketones or aldehydes will attach -
Chemistry: Post your doubts here!
here is the best i can do, in order for u to understand it.. one of the methyl groups on the ketones will donate an H to the c=o of the other ketone and this will break the c=o bond forming a C-OH bond and the rest of that molecule will attach to the other ketone from the part where the CH3... -
Chemistry: Post your doubts here!
question 4 a) last box u have CH2(OH)CH(OH)CO2H u have a hydroxyl group attached to a carbon which is attached to one neighboring carbon and a hydroxyl group attached to a carbon which is attached to 2 neighboring carbons so a primary and a secondary alcohol present so when oxidation takes... -
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Chemistry: Post your doubts here!
i really laughed so bad here..udk what egyptians speak? :o