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All Rights Reserved.
Tuesday, March 24, 2009 @ 10:06 AM
Chem..
Today,ive learnt that im sooo not good in mole! I have always been bad at it..and yeah,i failed m,y timed assignments..(hurray =.=) Anyways,teacher did went through and it kinda help..but somehow i cant seemed to do mole on my own *sobs*
Had SPA,on titration and we have assignment to do which need to be handed like tomorrow morning..woah,but still,ill meet up with a couple of my friends to help me out abit xD Thats about it,which i can remember...Oh ya,and im learning Atomic Structure too (self-study)
Friday, March 13, 2009 @ 10:57 PM
Lab Work:Titration Experiment
Tuesday, March 3, 2009 @ 8:09 AM
Empirical and Molecular Formulae
Today,ive learnt how to calculate the empirical formulae..1stly by stating the % by mass,Ar,No. of moles,Mole ratio & x4.Some how,i understood the rest except for the x4.[Why is there a need to x4?] Also,now i know there is a general formula for complete combustion.. Yay! xD
Chem..
Today,ive learnt that im sooo not good in mole! I have always been bad at it..and yeah,i failed m,y timed assignments..(hurray =.=) Anyways,teacher did went through and it kinda help..but somehow i cant seemed to do mole on my own *sobs*
Had SPA,on titration and we have assignment to do which need to be handed like tomorrow morning..woah,but still,ill meet up with a couple of my friends to help me out abit xD Thats about it,which i can remember...Oh ya,and im learning Atomic Structure too (self-study)
Friday, March 13, 2009 @ 10:57 PM
Lab Work:Titration Experiment
Few days ago,my class 09S4 did titration in chem lab.I missed the 1st experiment,so ill share what ive learnt during my attempt for the 2nd experiment.
Ive learnt that before we start on any experiment,we have to plan first.And to take note of the mole ratio and concentration of the solution we are using as a reagent or reactant.Because one mistake i made or shall i say most of us made.Was that our solution in the biurette was needed more than what we expected and it over shot the first reading.From there on,we realise our mistakes and also Mrs Pua explain to us the precautions needed to take.I enjoyed the titration experiment though i was slightly pissed due to my many failed attempts,haha! But at the end i DID get the Results! Yay me =D
Tuesday, March 3, 2009 @ 8:09 AM
Empirical and Molecular Formulae
Today,ive learnt how to calculate the empirical formulae..1stly by stating the % by mass,Ar,No. of moles,Mole ratio & x4.Some how,i understood the rest except for the x4.[Why is there a need to x4?] Also,now i know there is a general formula for complete combustion.. Yay! xD