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  1. E

    Chemistry P33 Anions/Cations

    lol its a rule tht uwhenever u test for sulphates u always add Ba2+ first nd then the acid..i read it sumwhere but forgot the reasoning=p
  2. E

    Chemistry P33 Anions/Cations

    lol chloride isnt there...if u r referring to the very first post then yes theres a posibilty tht the solutions fa5,6,7 nd 8 had chloride in them but since we were testng those for their cations it doesnt matter lol but sum1 plzzz confirm the sulphate carbonate part
  3. E

    Chemistry P33 Anions/Cations

    i got only sulpahte for the first nd sulphate nd carbonate both for the odr two=S
  4. E

    chemi practical how was it ppl ?!

    mine was good except i want to know whetehr ur values for molar enthalpy of ammonium chloride were cumng lower than 15.2 and how did u calculate it?nd wats the final percentage error?
  5. E

    practicals.............

    hey plzzz plzz pm me chem prac 33 details i hav a paper in less than 8 hrs!!URGENT!!!thanks in advance=)
  6. E

    Toughest P1 Math questions I came across. A little help...?

    Re: Toughest P1 Math questions I came across. A little help. well i thnk tht identity can cum it was a bit tricky but i finally managed it in 3 attempts=P dealing wid the numerator first sin^2x-cos^2x is in the form a^2-b^2 tht is (a+b)(a-b) nd therefore it becums (sinx+cosx)(sinx-cosx) cumng...
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