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Chemistry Predictions/Thoughts (2 Viewers)

jc7726

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that test was so much nicer than i expected. i was thinking i was gonna get screwed over and maybe a raw 70 but if everything goes right i might get 90+
 

year10studentpreparin

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that’s fair ig, from talking to friends most found it easier but a lot of us are better with quantitative stuff so it might not be super representative of everyone
I think its more that my mx2 mates study a lot more because thats expected of them and why they can do mx2 because of studying a lot rather than an advanced mate of mine who just plays video games all days and gets crap plus he fails advanced too
 

jc7726

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i don't know if they're talking abt something completely different, but you might have been able to use concentrations to find how much was added instead. since [CO2] = [CO] let [CO2] = x
x/x^2 = 10
x = 10x^2
1=10x
x = 0.1 for the conc of both
 

jc7726

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how? I was trying to solve for 2 terms, (x being the change in equilibrium, y being the how much co2 was added). They said they were equal so keq = 1/x, I got this equation in the end.View attachment 41177 didnt want to waste my last 20 mins trying to solve so i cut my losses. I still cant solve it lol.
sorry meant to reply, ^
 

dumNerd

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Why was there no non basic theory what so ever in this exam bruh.

I mean I think chem should be this way but unfortunate for people who don’t have calculations as their strong suits
 

=)(=

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i don't know if they're talking abt something completely different, but you might have been able to use concentrations to find how much was added instead. since [CO2] = [CO] let [CO2] = x
x/x^2 = 10
x = 10x^2
1=10x
x = 0.1 for the conc of both
pretty sure i got 0.169 added
 

dumNerd

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wasnt last yr the same tho and every year prior
Not really 2021 there was the ph buffer theory based q and a bunch of q which involved theory and calc understanding together

2022 was more calc but there was still relatively hard theory based q e.g. last q and the 9 mark was a theory q (although not difficult hard to interpret what they really wanted, was a long q if you thought they wanted method)

2023 has even more calc
 

Jane Mao

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Can someone confirm what they got for Compound C? It was hexan-3-one right??!
 

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