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Topic: HL Chemistry -- Human Biochemistry  (Read 3095 times)

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Offline Kazum

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HL Chemistry -- Human Biochemistry
« on: November 19, 2009, 08:55:02 PM »
Hello, I am new here and require help with a topic for my HL IB Chemistry class. The question states: "Compare the structure of retinol (Vitamin A), calciferol (Vitamin D), and ascorbic acid (Vitamin C)."

I do not know how to proceed as I am clueless about the topic at hand. If someone could provide me information, preferably with a source (I need to cite my work), I would be greatly appreciated.

Thanks,

Kazum

Offline Yggdrasil

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Re: HL Chemistry -- Human Biochemistry
« Reply #1 on: November 19, 2009, 10:37:49 PM »
Well, a good starting point is to look up the structures of these three compounds.  Next, think about concepts you have learned in chemistry.  Have you learned about polarity?  Can you classify the compounds by whether they are relatively polar or relatively non-polar?

Offline BetaAmyloid

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Re: HL Chemistry -- Human Biochemistry
« Reply #2 on: November 19, 2009, 10:42:31 PM »
Well, a good starting point is to look up the structures of these three compounds.  Next, think about concepts you have learned in chemistry.  Have you learned about polarity?  Can you classify the compounds by whether they are relatively polar or relatively non-polar?

You also have bond lengths, bond angles, number of bonds between atoms, similarity of atoms, electronegativity, reactivity, proportions of atoms between molecules, size of molecules, molecular shape, molecular geometry, electron domain geometry, a lot of other chemical things you could compare.

Hope this helps!  :)
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