Same same!
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flowermaster91
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- 4521
- 25-01-2010 22:26
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- 25-01-2010 22:26
(Original post by maxfire)
NMR? Enlighten me woman. Is it a bad thing I don't know what that is?
Or something along those lines.
That sounds so physicsy despite the fact it's chem. -
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- 4523
- 25-01-2010 22:27
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- 25-01-2010 22:28
(Original post by Smeh)
Nuclear magnetic resonance spectroscopy...it's a way of finding out crap about a molecule using the fact that a nucleus with an odd number of nucleons will have a resultant spin so it creates a teeny magnetic field and then they see how that reacts in a larger magnetic field.
Or something along those lines.
That sounds so physicsy despite the fact it's chem.Kinda sounds interesting. I wish I had the patience for chemistry.
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- 4525
- 25-01-2010 22:31
(Original post by Smeh)
Nuclear magnetic resonance spectroscopy...it's a way of finding out crap about a molecule using the fact that a nucleus with an odd number of nucleons will have a resultant spin so it creates a teeny magnetic field and then they see how that reacts in a larger magnetic field.
Or something along those lines.
That sounds so physicsy despite the fact it's chem.
What don't you understand about it? -
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- 4526
- 25-01-2010 22:31
(Original post by maxfire)
My physics teacher made a sexist racist joke today.
Being the only girl in the class I probably should've stood up for my sex.
Instead I lol'd.
Does that make me a bad person? -
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- 25-01-2010 22:33
(Original post by Loz17)
That sounds pretty correct to me. I don't need to know it in that detail for my spec but I looked it up during revision anyway.
What don't you understand about it?
It's just the analysis of the data that throws me. Like I always get the different hydrogen environments wrong and stuff like that.
We have to do carbon NMR too for the new spec which is even worse. -
flowermaster91
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- 25-01-2010 22:33
(Original post by Smeh)
My physics teacher made a sexist racist joke today.
Being the only girl in the class I probably should've stood up for my sex.
Instead I lol'd.
Does that make me a bad person? -
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- 4529
- 25-01-2010 22:36
(Original post by Smeh)
My physics teacher made a sexist racist joke today.
Being the only girl in the class I probably should've stood up for my sex.
Instead I lol'd.
Does that make me a bad person?
What was it though? I'm curious. -
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- 4530
- 25-01-2010 22:42
(Original post by Smeh)
I get what it is and how it works.
It's just the analysis of the data that throws me. Like I always get the different hydrogen environments wrong and stuff like that.
We have to do carbon NMR too for the new spec which is even worse.
The CH3 has 3 protons, so will have a relative peak 3 times the size, CH2 has 2 protons, so relative peak will be double the size and OH has 1 proton, so peak will be normal. Proton ratio will be 31.
Try this page. It has links to Carbon and proton NMR -
flowermaster91
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- 4531
- 25-01-2010 22:45
night *****es
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- 4532
- 25-01-2010 22:45
(Original post by maxfire)
It makes you a terrible person
What was it though? I'm curious.
Then someone else was like "Yeah we should get some japanese women"
Then my teacher was like "psshh then you'd fail, this is a physics exam we're talking about"
...Something like that anyway. -
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- 4533
- 25-01-2010 22:47
Hey guise, what do you reckon would make a better avatar:
or
or
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- 25-01-2010 22:48
night xx
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- 25-01-2010 22:49
(Original post by Smeh)
Can't really remember but someone in my class was like "yeah we should kidnap some japanese people, lock them in the basement and get them to do the exam for us"
Then someone else was like "Yeah we should get some japanese women"
Then my teacher was like "psshh then you'd fail, this is a physics exam we're talking about"
...Something like that anyway.
your teacher sounds like a right laugh. -
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- 25-01-2010 22:50
(Original post by Loz17)
I can't help with C13 unfortuanatly, but basically take ethanol for example, in terms of environments and ratios. Ethanol is CH3-CH2-OH. Different environments are basically these split sections of a molecule, where the protons are seperated by a different bond (in this case by the C-C bond. Another example is CH3 and O-CH3, they would count as different environments if that makes sense?)
The CH3 has 3 protons, so will have a relative peak 3 times the size, CH2 has 2 protons, so relative peak will be double the size and OH has 1 proton, so peak will be normal. Proton ratio will be 31.
Try this page. It has links to Carbon and proton NMR
This is a godsend! So much clearer than the book. -
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- 4537
- 25-01-2010 22:54
Middle one max.
And no probs Smeh -
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- 25-01-2010 22:55
(Original post by maxfire)
your teacher sounds like a right laugh.
Not very good at planning lessons though...
And the second eye is so cool. -
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- 25-01-2010 23:02
(Original post by Smeh)
Yeah he is pretty cool with letting us do pretty much what we want.
Not very good at planning lessons though...
And the second eye is so cool.(Original post by Loz17)
Middle one max.
And no probs Smeh -
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- 4540
- 25-01-2010 23:05
Very nice
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