Chemistry Predictions/Thoughts (4 Viewers)

Interdice

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How much of graphs are you supposed to write in pencil?

I wrote my entire graphs, including numbers, title and the thing on teh side in pencil. Is this okay?
 

Masaken

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in my chem class no one does physics and most of us do chem+bio
bio is shockingly small in my cohort (most of my grade do chem + phys or bio), around <50 (tbf they all dropped in year 11 cos the prelim course sucked) while phys is a little under 100 I think. chem is a little under 150 I forgot the exact number though
 

its_ace21

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bio is shockingly small in my cohort (most of my grade do chem + phys or bio), around <50 (tbf they all dropped in year 11 cos the prelim course sucked) while phys is a little under 100 I think. chem is a little under 150 I forgot the exact number though
in my school people were crying to get into bio BUT I WAS CRYING COZ I WAS DOING BIO
 

blob063540

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also did anyone get like 50 or 70 or something Litres for the amount of CO2 produced for the ethanol question?
(basically just x10^1 for magnitude)
 

blob063540

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also what HSC exam was similar difficulty to this one bc I feel like this one was easier than all of them, so I can reference scaling
 

blob063540

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I don't even remember but I used pV=nRT, I think I got 80 something L but I forgot completely and could be remembering entirely wrong
yeah yeah smthn like dat I was just scared bc Ive never gotten such a high vol in a question but ig 125ml or however much ethanol is alot
 

Interdice

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Yeah i also used pV=nRT and got 81.something but I was second guessing myself tbh
I was goign to use that, but isn't that formula only in the year 11 course? In teh gas laws part? because there is no mention of it in the HSC
 

natsnapshoot

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I was goign to use that, but isn't that formula only in the year 11 course? In teh gas laws part? because there is no mention of it in the HSC
I only used it because it was the only way I could see to get volume from the information provided so I was quite unsure- definitely thought it was only a year 11 thing 🤷🏻‍♀️
 

Masaken

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i got 81.7L, thought it was about right because i remember it was like 3.16 moles and 3 moles of gas is heaps of volume. 1 mole of gas is 24.79L at slc for example
ok good I got 81 makes sense 🔥 we allg allg winning fr
 

Goldattacker40000

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Yeah I got something to the -11 but it looked really small in comparison to the other given values so don't know if i did it right
 

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