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Paper 5 Tips !! :)
see use the equation CV = C1V1 suppose now u want to prepare a solution of 1M from ur 2M u will use it that way 2V = 1(100) v = 50 cm^3 so u will need a volume of 50cm^3 acid and 50cm^3 of water. now suppose that u need to prepare a solution of 0.5M from ur 2M solution u will say 2V =... -
Paper 5 Tips !! :)
they r VERY weird..who would guessed in an exam that the graph will be first a line then curve..omg thats insane -
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Paper 5 Tips !! :)
oh the examiner reports says " Most candidates drew a straight line rather than a line which curved upwards after a pressure of around 200kPa" i am one of these "most candidates" lol so it is supposed to be a line which will curve after 200kpa -
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Paper 5 Tips !! :)
its gonna be a straight line passing through the origin.. -
Paper 5 Tips !! :)
if anyone is done with paper 52 may/june 2012 can u share ur question one apparatus and the step by step description pls ? http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s12_qp_52.pdf -
Paper 5 Tips !! :)
the unit means how many grams of the "solute" dissolves (soluble) in 100g of water -
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Chemistry: Post your doubts here!
guys which variable is on the y axis and which one is on the x-axis? i alway get confuseddd by this arghh!! -
Chemistry paper-21
i dont wanna know if what i will say is discussing a paper or not. if it is please tell me and i will delete my post because i am not willing to discuss but i just have a general question. if we use hot acidified MnO4 on a double bond which had RCH=CRH it will oxidise to carboxylic acids? if i... -
Math Paper 12 May/June 2013
don't worry man the examiner will look at every thing written on the paper and ur paper is not just seen by one examiner. i heard it is rechecked by the chief examiner so if the chief examiner noticed that the junior examiner who marked ur paper didn't check the continued part or whatsoever then... -
Chemistry: Post your doubts here!
if a hydroxyl group is in a ketone or aldehyde they have the name hydroxy for example 2-hyrdoxybutanal or 2-hyroxybutanone -
Chemistry help
ok here concentrated sulfuric acid will not be able to oxidise NaCl or else we would have yellowish green gas formed so it is not stronger than chlorine but it will oxidize NaI because purple vapour is formed so conc H2SO4 is stronger than iodine so the answer is D and H2SO4 is stronger than... -
Chemistry : P1 and P2 doubts only (Only AS allowed)
yeah though i say dilute hydrochloric acid and heat under reflux but i guess dil. sulphuric acid is right too -
Chemistry : P1 and P2 doubts only (Only AS allowed)
are you talking about the hyrolysis of nitriles ? -
Chemistry : P1 and P2 doubts only (Only AS allowed)
idk y syed1995 everytime i see ur avatar i freak out lol -
Chemistry : P1 and P2 doubts only (Only AS allowed)
mole of that gas DIVIDED by total moles TIMES total pressure..if u look at the moles of X then 1/3 x total pressure -
Chemistry : P1 and P2 doubts only (Only AS allowed)
H2SO4 + HBr ----> Br2 + H20 + SO2 H2SO4 + HI ----> I2 + H2S + H2O these aren't balanced though. too lazy to balance them :p -
Chemistry : P1 and P2 doubts only (Only AS allowed)
this made me laugh for real