ATAR Notes: Forum
VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Chemistry => Topic started by: jackson1234 on December 07, 2010, 12:32:48 am
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I have attached a simple question sheet that was provided to me for chemistry during transition. It basically encapsulates the simple things that you should be well and truly have knowledge over in unit 1 especially.
Good Luck class of 2011 Chemistry Students :)
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Hey thanks, i'll def be needing this for my unit 1+2 revision over the next few days.
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Thanks :) do you have solutions?
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Thanks! Yeah, are there solutions to the Q?
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Yeah ill post solutions soon, but they're going to be done by me. So if there are any mistakes or errors, just post them here. cheers guys
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oh ok then we should all do them and post answers :)
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I had a shot at it.
It has been way too long, sory but I didn't have a data book (for the periodic table, value of 0degC in K (-273?))
Anyway, here it is I'm not sold on my working though.
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I had a shot at it.
It has been way too long, sory but I didn't have a data book (for the periodic table, value of 0degC in K (-273?))
Anyway, here it is I'm not sold on my working though.
K= T in degrees + 273 so yeah what you said is correct, im doing these questions now almost done
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My answers:
a)i) 0.0381g
ii) C3N3O9H5
iii) same as a)ii)
b) 3.77 x 10^-22
c)i) 4C3N3O9H5 -> 12CO2(g) + 6N2(g) + 10H20(g) + O2(g)
ii) 1146kPa
not sure if these are right...
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Are we supposed to know the chem formula of glycerin? What other substances are we expected to know? e.g. glucose etc
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Yeah no clue mate , but its unlikely that u would need to remember chem formulas especially the more complex ones like Glycerin. Its more a process of determining their molecular formulas through calculations eg mol ratios.
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well you can figure out molecular and empirical formulas if the question gives you info about mass, molar mass etc use mol ratios
i think they can give us questions in regard to solving for empirical or molecular formulas
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Question 1 b is not 227 g - the question stated molecule not mole.
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lol i was thinking that... is it 3.77 x 10^-22 ??? seems like a weird answer :s
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lol i was thinking that... is it 3.77 x 10^-22 ??? seems like a weird answer :s
If the answer is in grams that would be correct.
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lol i was thinking that... is it 3.77 x 10^-22 ??? seems like a weird answer :s
If the answer is in grams that would be correct.
Hvae you worked it out?
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lol i was thinking that... is it 3.77 x 10^-22 ??? seems like a weird answer :s
Just did it, unless I made an error that should be correct
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lol i was thinking that... is it 3.77 x 10^-22 ??? seems like a weird answer :s
Just did it, unless I made an error that should be correct
cool :) thanks