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Good idea..., Keep it up. Im doin Phyics 3b papers as the exam is on tomorrow. -
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Look You're Still Sleepin Eh :p .. Hop You Will Learn Bio Well En Do All Past Papers From 2009 to 2012 june^.^ -
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:p You Have Done Great Then. I Actually Did Some Parts Wrongly En No Time To Catchup:( But.. In The Coming Papers I'l Make It Right -
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Hehe ;D ^.^ But Still Im Liike.. :'(... Anywayz Best Of Luck ;) Bdw Im Not Doing Bio :/ -
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;D.. Juz Came Bak Aftr Exam Chem 3b:/ Have You Done Well ^.^ Im Bit Nervous Cuz I Did Mistakes:(:( -
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Im going through it now:( .. It is an endothermic reaction. Youh got it eh :eek: I didn but..:( -
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Aw That Q.. :/ I'm yet doing 2010:'( But below is the answer for that question:/ Acceptable Answers: There are 4 marks First & second marks stand alone 1. Pipette/burette / measuring cylinder / balance to transfer (a known amount of) (water) (1) 2. to (expanded) polystyrene cup / calorimeter /... -
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Aw mini attack..:p But we have to prepare. ;) It may come in any question.. how far have you gone in past papers now. Im yet doing 3b papers..:(:( -
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Haha scared..:p I think the questions may come about it. Reactions of alkanes with chlorine is an important part of organic chemistry. I know how to draw tetrachloromethane:/ In tetrachloroethane the molecular formula is C2H2Cl4 ? The Structural formula is CHCl2CHCl2 We have to know the... -
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Aw just saw it. :/ You did a simple mistake there :p To balance the equation they have given octane as 2 moles. 1 mol .............. 114 g 2 mol .............. 228 g So, 10 mol ......... 1140g which leads to 1.14kg. The answer is B. -
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Aww I found the answer ;D It is D :p You Know why? Because...the question asks about first five electrons. Aluminium has atomic number 13 and therefore it consists of 13 electrons. The last electron is in 3p orbital ! The next two electrons are in 3s orbital. and the remaining 2 electrons are... -
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Aww ;D Thank Youh! Urgh.. I Did A Mistake :/ I was correct upto this level Mole ---------------------4/4------------ 4/20.2 ----------------------------1 ----------------0.2 But i forgot to divide by smallest. >.< Hehe:p Btw, it is the question you asked >> June 2010 Unit 1 question 8... -
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Haha.. Naw :/ I didnt:( Can you tell me :) This question is the one you asked :/ -
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Hey.. you mean this question rite? 8. A sample of gas was prepared for use in helium-neon lasers. It contained 4 g of helium and 4 g of neon. What is the ratio of helium atoms to neon atoms in the sample? A 1 : 1 B 2.5 : 1 C 1 : 5 D 5 : 1 -
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Hey:( I even didnt know this:( The asnwer is D. But for me A is the right one :( Im going through the notes to solve ito_O