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Wooh :) got 3.8g overall, i think i aced core, maybe lost 2 marks in equilibrium question and lost 1 mark for nitrogen in bread

i had 0.8% .. hmm Well i used the haber process.. since it said nitrogen is converted into ammonia, and the only sufficient way to do that is by the haber proces.. the ratio was 1:2 hmm i could be wrong either way, 1/2 marks atleast

ok realized im wrong for 5

Are you guys, joking.. Seriously ur freaking me out,

lol? are u serious, im confident until question 6 pretty sure 6 is wrong. and 9 14, 15 were a guess :) hmm.. i was thinking probably 12/15

i chose polyethylene Bottle. yea i talked about crude oil into ethene Ethene to Ethane. Ethene addition polymerisation with: -iniation -propagation -termination Then how HDPE is formed, and HDPE properties Then finally HDPE used to make bottle :D darn, should of chose PVC since its...

Yep your correct, Accept for the cathode hald equation you have to times by 2 , to balance it out with the Anode half equation. And in the net ionic equation the 2 electrons cancel. however this doesnt change the voltage.

What where your multiple choice answers. Mine, 1) C 2) C 3) D 4) C 5) D 6) A 7) B 8) B 9) A 10) B 11) D 12) A 13) B 14) A 15) C There was about 2-3 tough ones hope i did alright :D did u guys get similare?

^ LoL ! Someone isnt ready.. Nah im not either, but goodluck !

Hope this isnt too late :party: Test for identifying cations Cation Test ba^2+ = add CO32-, SO42-, PO43- and white ppt forms Ca^2+ = add OH-, SO42-, PO43- and white ppt forms pb^2+ = add CL-,OH-,SO42-,CO32-,PO43- and white ppt forms Cu^2+ = add OH- and blue ppt...

Lol, good point.. Arghh.. this is stressing me out, im beginning to think im not prepared now. but tbh i think its beyond the syllabus... like we only scrapes titration graphs anyway

The 2nd point you have to talk about lavoiser, davy, arrhenius .... for acids For bases.., i HAVE NO IDEA And for the Experiment, there talking about Titration however, instead of a Ph indicator you use a computer based technology. eg a datalogger connected to a computer.

Lol, good point.. Arghh.. this is stressing me out, im beginning to think im not prepared now. but tbh i think its beyond the syllabus... like we only scrapes titration graphs anyway

hmm.. this is interesting. The conquering chem textbook has the one i memorizes :) ohh well, i think its both correct

hmm.. i wouldnt specifically talk about hwo to remove them, since it comes under the purification process.. But monitoring yes, N:P ratio 10:1 etc... also monitoring using ppt

Quick and easy method: Add HNO3 and yellow ppt forms. :D goodluck tommorow

Huh, i thought the cathode reaction was: NH4^+4 + MnO2 + H20 + e^- ---------> MN(OH)3 + NH3

Well, Based on what ive heard about last years band cutoffs a 65%+ was a band 5 (Can anyone confirm this) So you should be looking at a band 5 mark.

What was last years, band 6 cutoff. And im pretty sure this years gonna be lower

If you checked out the thread with the pdf file with Solutions.. tell us your scores ! Mine, isnt too good 93/120 What do you guys reckon the band 6 cutoff would be this year? Anyway, post your marks !