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September 24, 2025, 03:33:30 am
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Author Topic: Exam Thoughts  (Read 16174 times)  Share 

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kenny_

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Re: Exam Thoughts
« Reply #15 on: June 15, 2011, 02:33:55 pm »
Did anyone see this in the balanced redox equation?

_ H+ + _TeO3 + Cr2O7 ---> _ + H2TeO4 + _ + Cr3+ + _ H2O

_ + H2TO4 wtf?
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cranberry

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Re: Exam Thoughts
« Reply #16 on: June 15, 2011, 02:34:53 pm »
Quote from: superstar1 on June 15, 2011, 02:31:09 pm
was part b of question 4, higher, lower, or same


i did lower.....for the mass spectrometry question, i initially wrote the 29 m/z fragment as CH3CH2+, but then changed it to Br+ for some reason? which ones right?
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Master of Civil Engineering and Bachelor of Science at the University of Melbourne

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Andiio

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Re: Exam Thoughts
« Reply #17 on: June 15, 2011, 02:36:13 pm »
Quote from: kenny_ on June 15, 2011, 02:33:55 pm
Did anyone see this in the balanced redox equation?

_ H+ + _TeO3 + Cr2O7 ---> _ + H2TeO4 + _ + Cr3+ + _ H2O

_ + H2TO4 wtf?

Yeah i was like what was up with the +'s... ahha
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liuetenant

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Re: Exam Thoughts
« Reply #18 on: June 15, 2011, 02:37:31 pm »
damn! i got thrity....ragh! i didnt realise u had to DIVIDE it... i multiplied it...screw it...
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Tashi

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Re: Exam Thoughts
« Reply #19 on: June 15, 2011, 02:39:39 pm »
Dear goddddd. I hated it. In the end I got 36.8% however you can barely read my answer. I scribbled out all my working and then made a tiny box in the corner to write. I spent nearly all my time on that question and didn't get to check anything.
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jorrrdan

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Re: Exam Thoughts
« Reply #20 on: June 15, 2011, 02:40:32 pm »
holy sh*t, i screwed up the balancing of the telluvite ore equation... they'll still give consequential for mole ratio workings right?
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Tashi

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Re: Exam Thoughts
« Reply #21 on: June 15, 2011, 02:41:31 pm »
Quote from: kenny_ on June 15, 2011, 02:33:55 pm
Did anyone see this in the balanced redox equation?

_ H+ + _TeO3 + Cr2O7 ---> _ + H2TeO4 + _ + Cr3+ + _ H2O

_ + H2TO4 wtf?

And yeah, I was like - am I meant to put extra products in here? That was confusing.
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34590

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Re: Exam Thoughts
« Reply #22 on: June 15, 2011, 02:42:30 pm »
Everyone will get a mark for that messed up redox equation~
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chrysalis

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Re: Exam Thoughts
« Reply #23 on: June 15, 2011, 02:43:06 pm »
Damn, now that I think about it, Q4 wasn't even particularly hard. The irrelevant crap they included just screwed me over!

Do you guys think the A+ cut off will be higher or lower than last year?
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34590

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Re: Exam Thoughts
« Reply #24 on: June 15, 2011, 02:44:05 pm »
Around same maybe...
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Tashi

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Re: Exam Thoughts
« Reply #25 on: June 15, 2011, 02:45:38 pm »
Although, overall I suppose it was easy, question 4 confused me so much and I probably messed up heaps of the rest as I wasn't focused properly. It could be lower.. or maybe about the same. Why did they put so much information in that question!
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4231

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Re: Exam Thoughts
« Reply #26 on: June 15, 2011, 02:47:02 pm »
How many sig figs did u need? i put 36.81 cos all the masses were to 4 sf but some in our class just wrote 37 since the temp was to 2 sf
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Greatness

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Re: Exam Thoughts
« Reply #27 on: June 15, 2011, 02:48:57 pm »
Question 4 :( And yeah i was giong WTF... with the +s in the redox equation i stuffed up a few of the questions tho :@
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sanam

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Re: Exam Thoughts
« Reply #28 on: June 15, 2011, 02:49:21 pm »
i screwweeddd up multiple choice real badd! got D for the ibuprofen lysine question but apparently it was B and then that gypsum question...ewww
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Tashi

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Re: Exam Thoughts
« Reply #29 on: June 15, 2011, 02:51:13 pm »
Quote from: 4231 on June 15, 2011, 02:47:02 pm
How many sig figs did u need? i put 36.81 cos all the masses were to 4 sf but some in our class just wrote 37 since the temp was to 2 sf

Temperature wasn't used in calculations... I can't remember the rest. I did to 3.
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