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February 21, 2026, 03:43:04 pm
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Author Topic: Exam Thoughts  (Read 17705 times)  Share 

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the.watchman

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Re: Exam Thoughts
« Reply #90 on: June 15, 2011, 04:21:24 pm »
Quote from: fatimaseraj on June 15, 2011, 04:20:30 pm
Paper easy got 36.8 for 4 a) and same for 4 b)

3 sigfigs or 4?
all required info was to 4 i believe...
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Tashi

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Re: Exam Thoughts
« Reply #91 on: June 15, 2011, 04:21:37 pm »
Quote from: cltf on June 15, 2011, 04:18:33 pm
Quote from: Tashi on June 15, 2011, 04:15:35 pm
What was the answer to MC 8 with ibuprofen? I don't get why it wouldn't be a simple condensation reaction forming a peptide linkage?
The question was asking which form was MORE soluble, all of them are soluble, but the question is where ionic supersedes polarity.

Oh geez, I thought it was asking what the structure is when they react together. Oh well.
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cltf

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Re: Exam Thoughts
« Reply #92 on: June 15, 2011, 04:22:05 pm »
Well its not like the course tells you which is more soluble, VCAA could pay both, its just D looked so sus and C was too obvious.
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Tashi

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Re: Exam Thoughts
« Reply #93 on: June 15, 2011, 04:23:23 pm »
Quote from: cltf on June 15, 2011, 04:22:05 pm
Well its not like the course tells you which is more soluble, VCAA could pay both, its just D looked so sus and C was too obvious.

Haha, I'm still confused. I put B, I'll just let it go :)
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luken93

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Re: Exam Thoughts
« Reply #94 on: June 15, 2011, 04:25:42 pm »
Quote from: cltf on June 15, 2011, 04:22:05 pm
Well its not like the course tells you which is more soluble, VCAA could pay both, its just D looked so sus and C was too obvious.
Dang, should've learnt from Aspirin in 09 :(
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david10d

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Re: Exam Thoughts
« Reply #95 on: June 15, 2011, 04:26:30 pm »
LOL, so everyone agrees that Q4 was the make or break question?

Most of the people I spoke to finished it in just a hour and just got stumped on Q4a..

Ah well

Cut off for A+?
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the.watchman

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Re: Exam Thoughts
« Reply #96 on: June 15, 2011, 04:26:45 pm »
Quote from: luken93 on June 15, 2011, 04:25:42 pm
Quote from: cltf on June 15, 2011, 04:22:05 pm
Well its not like the course tells you which is more soluble, VCAA could pay both, its just D looked so sus and C was too obvious.
Dang, should've learnt from Aspirin in 09 :(

yeah, the lysine wasnt important for the question, couldve been Na+ for all it mattered...
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Christafa

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Re: Exam Thoughts
« Reply #97 on: June 15, 2011, 04:44:32 pm »
I found it really difficult :(. So disappointing, too.

I'll be happy with a B.
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JayCanteloupe

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Re: Exam Thoughts
« Reply #98 on: June 15, 2011, 04:49:50 pm »
the iboprofen was d , the 2 ions, as shown by the question more soluable in water, ion dipole bonds are more soluable than any of the other options
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cranberry

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Re: Exam Thoughts
« Reply #99 on: June 15, 2011, 05:09:47 pm »
For 4 b), didn't anyone notice that they gave you the molar mass of the precipitate including H20? so the mol we first worked with, was larger than it would be if it was dehydrated, which would give a lower percentage?
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cltf

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Re: Exam Thoughts
« Reply #100 on: June 15, 2011, 05:12:19 pm »
Quote from: cranberry on June 15, 2011, 05:09:47 pm
For 4 b), didn't anyone notice that they gave you the molar mass of the precipitate including H20? so the mol we first worked with, was larger than it would be if it was dehydrated, which would give a lower percentage?
So the mass was inclusive of the water, hence when heat the mass of water is lost too, so it's proportional.
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luken93

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Re: Exam Thoughts
« Reply #101 on: June 15, 2011, 05:14:00 pm »
DELIBERATELY heated BEFORE WEIGHING

If they know they're heating it, therefore they will know the molar mass without water, so it'd remain the same.
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BoredSatan

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Re: Exam Thoughts
« Reply #102 on: June 15, 2011, 05:16:09 pm »
I did Higher.. omg kill me now  :'(

got raped on the MC.. the last 3 questions got me :(

but did get Q4a right.
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mickeymouse

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Re: Exam Thoughts
« Reply #103 on: June 15, 2011, 05:17:53 pm »
I wrote short answer in pencil I feel like I'm doomed
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banditkeith

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Re: Exam Thoughts
« Reply #104 on: June 15, 2011, 05:20:45 pm »
So glad I changed to the same at the last minute. Usually a question asks if it would be higher or lower and since they included the "same" option this time, I thought there would be something to it so I crapped on about how molar ratios are still the same etc.

And I was confused as hell with 4a but winged it with an unbalanced equation which resulted in me getting 36.81% which seems to be the general consensus. So happy!

Hopefully I get an A at least.
The exam this year wasn't really hard... Just very very tricky. Can't wait to find out what I will get now.
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