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Topic: help to figure out this chemical picture included.  (Read 6832 times)

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Offline hirdscemicals

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help to figure out this chemical picture included.
« on: May 18, 2012, 07:59:12 AM »
Hi i need help to figure out what this chemical is any help please,[/img]

Offline AWK

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Re: help to figure out this chemical picture included.
« Reply #1 on: May 18, 2012, 08:34:54 AM »
compare to the structures od aldohexoses in any texbook of organic chemistry.
AWK

Offline hirdscemicals

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Re: help to figure out this chemical picture included.
« Reply #2 on: May 18, 2012, 12:20:31 PM »
Hi i am new to chemistry is it possible some one could do it for me and tell me the chemical thank you.

Online Borek

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Re: help to figure out this chemical picture included.
« Reply #3 on: May 18, 2012, 12:50:37 PM »
Hi i am new to chemistry is it possible some one could do it for me and tell me the chemical thank you.

That would be against forum rules.

Can you count atoms and write molecular formula?
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Offline hirdscemicals

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Re: help to figure out this chemical picture included.
« Reply #4 on: May 20, 2012, 01:17:15 PM »
Hi no i can not count atoms and write a molecular formula please help.

Offline Arkcon

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Re: help to figure out this chemical picture included.
« Reply #5 on: May 20, 2012, 01:43:30 PM »
Well, let's try to figure it out, based on what you do know, or have learned recently in a science class.

Hi no i can not count atoms and write a molecular formula please help.

You can definitely count the carbons, oxygens, and hydrogens to help you look up the compound in a list, then compare the orientation of -OH groups.  Don't make me send George after you.
Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

Offline hirdscemicals

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Re: help to figure out this chemical picture included.
« Reply #6 on: May 24, 2012, 05:55:11 AM »
Hi i have tried to figure this out but to no avail, please help thank you

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Re: help to figure out this chemical picture included.
« Reply #7 on: May 24, 2012, 06:02:42 AM »
Let's start with something simple.

How many oxygen atoms?
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Offline hirdscemicals

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Re: help to figure out this chemical picture included.
« Reply #8 on: May 24, 2012, 09:10:54 AM »
is it 6?

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Re: help to figure out this chemical picture included.
« Reply #9 on: May 24, 2012, 09:14:07 AM »
Yes.

Now for something harder. Each unmarked node in the structural formula is a carbon atom. How many of these?
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Offline hirdscemicals

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Re: help to figure out this chemical picture included.
« Reply #10 on: May 24, 2012, 09:35:24 AM »
is that also 6?

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Re: help to figure out this chemical picture included.
« Reply #11 on: May 24, 2012, 09:42:37 AM »
Yes.

Now comes the tricky part. Each carbon has four bonds - when they are not shown, it means there are hydrogen atoms there. So, counting from the left - first comes an oxygen with one hydrogen atom, then comes a carbon connected to two other carbon, so it has two bonds left - which means there are 2 hydrogen atoms connected, then comes a carbon which is connected to two other carbons and one oxygen - which means there is one bond left for a hydrogen, and so on.

How many hydrogens in total?
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