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September 30, 2025, 03:16:10 am
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VCE123456789

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Question 1
« on: June 09, 2010, 03:27:16 pm »
What is the percentage of Iron?
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Studyinghard

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Re: Question 1
« Reply #1 on: June 09, 2010, 03:27:51 pm »
3.82%?
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10weid

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Re: Question 1
« Reply #2 on: June 09, 2010, 03:28:32 pm »
3.81% i think...
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VCE123456789

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Re: Question 1
« Reply #3 on: June 09, 2010, 03:28:51 pm »
yer i got that as well
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kenhung123

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Re: Question 1
« Reply #4 on: June 09, 2010, 03:29:03 pm »
was the titre 22.0ml?
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matt123

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Re: Question 1
« Reply #5 on: June 09, 2010, 03:29:11 pm »
ALOT ALOT ALOT of people forgot that it was in 20ml and you had to make it to 250ml

dont eggerate the A+ mark . its not going to be 74/75 .... its going to be about 66/75
and the grades will be similar to last year .. but every grade up by say .. 5-10% ..
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VCE123456789

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Re: Question 1
« Reply #6 on: June 09, 2010, 03:29:36 pm »
yer
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VCE123456789

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Re: Question 1
« Reply #7 on: June 09, 2010, 03:30:11 pm »
wat is the equation for 3a if u use ethanol?
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Studyinghard

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Re: Question 1
« Reply #8 on: June 09, 2010, 03:30:26 pm »
YES! low A+ cut off than 70/75 !!

66/75 cut off would be good :)
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Studyinghard

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Re: Question 1
« Reply #9 on: June 09, 2010, 03:31:14 pm »
Quote from: VCE123456789 on June 09, 2010, 03:30:11 pm
wat is the equation for 3a if u use ethanol?

i effed that up . i used ethanoic acid. but im guessing it will be CH3CH2OH ---> CH3+ CH2O* (radical)
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kenhung123

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Re: Question 1
« Reply #10 on: June 09, 2010, 03:31:57 pm »
Quote from: matt123 on June 09, 2010, 03:29:11 pm
ALOT ALOT ALOT of people forgot that it was in 20ml and you had to make it to 250ml

dont eggerate the A+ mark . its not going to be 74/75 .... its going to be about 66/75
and the grades will be similar to last year .. but every grade up by say .. 5-10% ..
when calculating mass?
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kyzoo

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Re: Question 1
« Reply #11 on: June 09, 2010, 03:32:16 pm »
Quote from: matt123 on June 09, 2010, 03:29:11 pm
ALOT ALOT ALOT of people forgot that it was in 20ml and you had to make it to 250ml

Really? That kind of thing becomes natural once you've done enough practice exams =/

And the equation for 3a I got

CH3CH2OH (g) + e- --> CH3CH2OH+ + 2e-
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matt123

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Re: Question 1
« Reply #12 on: June 09, 2010, 03:32:31 pm »
yeaaah to get 3.8%
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kenhung123

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Re: Question 1
« Reply #13 on: June 09, 2010, 03:32:53 pm »
I think there is many possibilities in the ethanol...I did CH3CH2OH+e=>CH3CH2OH+ +2e
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matt123

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Re: Question 1
« Reply #14 on: June 09, 2010, 03:33:42 pm »
lol i didnt answer it .. had no idea of ionisation equation
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Completed VCE at the age of 16.
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