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How was it? - HSN forum - Page 7

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How was it?


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#121 koala_bear123

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Posted 31 May 2005 - 04:45 PM

QUOTE(dfx @ May 31 2005, 05:41 PM)
About 0.5 something.. and it resembles the lower one (I think it was Sodium Chloride). I also said that the ionic radii (and hence size) was inversely proportional to the bond enthalpies which Im pretty sure is correct.

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Which question was tht?!??! I can't remember that one at all which isn't too good!


#122 YIC

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Posted 31 May 2005 - 04:45 PM

QUOTE(bred @ May 31 2005, 05:34 PM)
QUOTE(Soph.E. @ May 31 2005, 05:32 PM)
Oh well... just that happy wait til August to endure now... oh, anyone know the answer to the question where you had to pick between van der Waals/covalent bonds breaking/forming during distillation?

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I said covalent bonds break and then form again in the distillation process...

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I said that van der waals break and reform. Anyone get that as well?

#123 bred

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Posted 31 May 2005 - 04:45 PM

QUOTE(koala_bear123 @ May 31 2005, 05:39 PM)
Thts ok

Did anyone rite for the gas mask one that because we exhale water vapour this wud continually shift the equilibrium to the right therefore continually producin more oxygen?? That one really confused me

Also what did people rite for the second part about removing carbon dioxide??

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I didn't know what to write for the first part - I just said some stuff about it being cyclic and stuff, so I don't think I've got a mark for that - but for the last part I said the oxygen from the CO2 breathed out would go back into making the oxygen for the KO2 - something like that. :/
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#124 cork screw

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Posted 31 May 2005 - 04:46 PM

The one with the big pretty pictures of lattice shapes... smile.gif

Took nearly the whole page.

#125 tupacshakur

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Posted 31 May 2005 - 04:46 PM

QUOTE(YIC @ May 31 2005, 04:03 PM)
QUOTE(bred @ May 31 2005, 04:49 PM)
QUOTE(koala_bear123 @ May 31 2005, 12:50 PM)
wot did every1 rite for the flour question in the multiple choice , think it was about qu5???

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I chose the option that said to remove the flour particles from the air, because they could cause an explosion.

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Me too!! laugh.gif

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was that the right answer, cos i wrote that aswell (in MC)
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#126 bred

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Posted 31 May 2005 - 04:47 PM

QUOTE(YIC @ May 31 2005, 05:45 PM)
I said that van der waals break and reform. Anyone get that as well?

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Van der Waals always exist between all atoms though, don't they?
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#127 gary

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Posted 31 May 2005 - 04:48 PM

Yeah I got that too for the radii.

They diagrams were so much for a 1 mark question

#128 cork screw

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Posted 31 May 2005 - 04:48 PM

QUOTE(bred @ May 31 2005, 05:47 PM)
QUOTE(YIC @ May 31 2005, 05:45 PM)
I said that van der waals break and reform. Anyone get that as well?

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Van der Waals always exist between all atoms though, don't they?

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Yes. so what did you say?

#129 tupacshakur

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Posted 31 May 2005 - 04:49 PM

QUOTE(bred @ May 31 2005, 04:47 PM)
QUOTE(YIC @ May 31 2005, 05:45 PM)
I said that van der waals break and reform. Anyone get that as well?

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Van der Waals always exist between all atoms though, don't they?

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i said van der vaals break and form again aswell

it didnt have anything to do with covalent bonds
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#130 bred

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Posted 31 May 2005 - 04:49 PM

QUOTE(cork screw @ May 31 2005, 05:45 PM)
QUOTE(dfx @ May 31 2005, 05:41 PM)
About 0.5 something.. and it resembles the lower one (I think it was Sodium Chloride). I also said that the ionic radii (and hence size) was inversely proportional to the bond enthalpies which Im pretty sure is correct.

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Huh?? Were we supposed to say that?

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I don't think you had to say all that. As far as I can remember, the question only asked you to state the ratio (0.48 I think) for 1 mark, and then what type this best relates to (I said the sodium one because it had a ratio of 0.52 which was by far the closest to 0.48) for the second mark.
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#131 koala_bear123

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Posted 31 May 2005 - 04:50 PM

QUOTE(cork screw @ May 31 2005, 05:46 PM)
The one with the big pretty pictures of lattice shapes... smile.gif

Took nearly the whole page.

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mmmmmmm i think i didnt read tht one rite. For part a i just rote a value and for part b i rote a trend, was ther nething more to it than tht??

#132 gary

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Posted 31 May 2005 - 04:51 PM

Van der waals break and reform it was in one of the older past papers.

#133 tupacshakur

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Posted 31 May 2005 - 04:52 PM

was the answer to one of the questions larger ion size = bigger enthalpy? (2nd part of paper)
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#134 bred

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Posted 31 May 2005 - 04:52 PM

QUOTE(cork screw @ May 31 2005, 05:48 PM)
QUOTE(bred @ May 31 2005, 05:47 PM)
QUOTE(YIC @ May 31 2005, 05:45 PM)
I said that van der waals break and reform. Anyone get that as well?

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Van der Waals always exist between all atoms though, don't they?

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Yes. so what did you say?


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QUOTE(bred @ May 31 2005, 05:34 PM)
QUOTE(Soph.E. @ May 31 2005, 05:32 PM)
Oh well... just that happy wait til August to endure now... oh, anyone know the answer to the question where you had to pick between van der Waals/covalent bonds breaking/forming during distillation?

View Post



I said covalent bonds break and then form again in the distillation process...

View Post



Please vote for me! (Brendan Howard, 5th from bottom, only 1 vote required): http://answers.polld...m/poll/2330393/

#135 sai

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Posted 31 May 2005 - 04:52 PM


quite a few questions were from papst papers in the mc and some questions in part 2 were similar to ones ive done before

#136 bred

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Posted 31 May 2005 - 04:53 PM

QUOTE(gary @ May 31 2005, 05:51 PM)
Van der waals break and reform it was in one of the older past papers.

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sad.gif Oh well.
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#137 Ally

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Posted 31 May 2005 - 04:53 PM

QUOTE(bred @ May 31 2005, 05:47 PM)
Van der Waals always exist between all atoms though, don't they?

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Yer, that's true.

Good to hear that the majority of you are happy with the exam. smile.gif

#138 tupacshakur

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Posted 31 May 2005 - 04:53 PM

was the answer to one of the questions larger ion size = bigger enthalpy? (2nd part of paper)
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#139 cork screw

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Posted 31 May 2005 - 04:53 PM

I forgot the first Q

Name of the unstable intermediate!! Is it the activated complex?

#140 bred

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Posted 31 May 2005 - 04:54 PM

QUOTE(tupacshakur @ May 31 2005, 05:52 PM)
was the answer to one of the questions larger ion size = bigger enthalpy? (2nd part of paper)

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I said larger ion = smaller enthalpy.
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