November 06, 2024, 06:24:31 AM
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21
Physical Chemistry Forum / Re: Composition and Properties of Matter ? Physics/Chemistry
« Last post by DrCMS on November 04, 2024, 10:01:01 AM »
Sorry my awkward question make you feel inadequate to answer .

Your questions were not well worded and so are difficult to answer plus our lack of knowledge about your level of knowledge. 
However you have made a number of statement that are incorrect so I assume you are quite young with a lot to learn but with an attitude that will hinder that.
22
Citizen Chemist / Re: PIC:Separate water from tea
« Last post by marquis on November 04, 2024, 09:59:59 AM »
A difference in cultures.  Western cultures look at things slightly differently.  There are many with the proper training, proper resources , who just don't happen to be in the right place at the right time.  Penicillin is an example.  A culture was found killing other Microbial growths.  The right person, with the right training, found it at the right time. 

 With the growth of statistics in western industrial work, luck definitely plays a role. Sometimes, its only by chance a problem is found.  Cost cutting is done using statistics to "prove" additional testing is not needed.  Often, these errors are only caught by luck. Been down that road several times.

Regardless,  I will always wish friends good luck!!

23
We will take that as a no answer then , you can't detect Dopamine therefore Dopamine is speculation

You can't observe dopamine with a microscope (using a tunneling microscope in very low temperatures it should be definitely possible though, but that's highly impractical), but sure you can detect it.

Same can be said about - say - electrons or magnetic fields, so by your logic they don't exist as well.

Dopamine is a compound with a well known properties, one that we know how to synthesize, how to separate, one that you can buy (as a hydrochloride) salt, one that is used intravenously as a medication in some cases. You really think it is all speculation?

Quote
You can prove me wrong by providing a picture of the ''chemical'' Dopamine of course .

Sure thing, image attached.

I am sorry for double posting this quote but I wanted to provide you with the correct atomic model.Q is the elementary charge grounded by the particle . Q does not expand into space because space has no conductive properties . Different elements are different sized particles , hence a bigger particle has more grounded elementary charge than a smaller particle.  Each particle has a conservation max and a Kmax .  I can tell you using physics about molecular bonds etc . (x0,y0,z0) has zero electrons . (x1,y1,z1,) has 1 electron etc etc ..All particles are also dynamic ,what this means is that although any particle has a conservation Qmax , the particles can temporally store x amount of charge.  This allows for molecular bonds .
24
https://pubchem.ncbi.nlm.nih.gov/compound/Dopamine
https://pubmed.ncbi.nlm.nih.gov/?term=dopamine+receptor&filter=simsearch2.ffrft&filter=pubt.review
The first link gives its properties.  The second link is a search of biomedical journal articles on the term "dopamine receptor."  I applied two filters, one specifying reviews and the other specifying that the paper must be available free of charge. There are about 2500 articles, which means that if I were researching the topic, I would probably want to apply additional filters.

All the words in the world mean nothing without physical proofs !
25
We will take that as a no answer then , you can't detect Dopamine therefore Dopamine is speculation

You can't observe dopamine with a microscope (using a tunneling microscope in very low temperatures it should be definitely possible though, but that's highly impractical), but sure you can detect it.

Same can be said about - say - electrons or magnetic fields, so by your logic they don't exist as well.

Dopamine is a compound with a well known properties, one that we know how to synthesize, how to separate, one that you can buy (as a hydrochloride) salt, one that is used intravenously as a medication in some cases. You really think it is all speculation?

Quote
You can prove me wrong by providing a picture of the ''chemical'' Dopamine of course .

Sure thing, image attached.

I am not being awkward or an ''enemy''of chemistry . My learning style is an absolute learing style , something Honey and Mumford never considered .

You say we can detect Dopamine , by this do you mean you can take a swab and it will show up on a machine test similar to an airport test machine or do you mean something else?

We don't actually detect electrons fyi , there is no way to test the elementary conserved charge of a particle . It is not like we can just attach an electrical test meter and measure a voltage etc . We can zoom in using special equipment and see latices etc but we cannot see the exact makeup of an atom. Protons , nuetrons and electrons are just one model we use that is accepted at this time but it isn't absolute either .
I recall some chemistry , the p-layers , but this is incorrect because it is not how the physics works .

If I ingest any chemical substance , we could take bloods or urine samples and the substance will show up in a toxicology report .

So you claim we can detect Dopamines, I disagree unless you are using brain fluid or other ,then analising this  .

I'll be blunt , you are saying to me , you know what is in an unlabelled can without opening it .

Could you please explain the method of detection for me ?

I want to believe you but I require absolute proofs , not something that only exists written on paper .


 




26
https://pubchem.ncbi.nlm.nih.gov/compound/Dopamine
https://pubmed.ncbi.nlm.nih.gov/?term=dopamine+receptor&filter=simsearch2.ffrft&filter=pubt.review
The first link gives its properties.  The second link is a search of biomedical journal articles on the term "dopamine receptor."  I applied two filters, one specifying reviews and the other specifying that the paper must be available free of charge. There are about 2500 articles, which means that if I were researching the topic, I would probably want to apply additional filters.
27
Biochemistry and Chemical Biology Forum / Re: Are Dopimines proven via blood analysis ?
« Last post by Borek on November 04, 2024, 05:30:13 AM »
We will take that as a no answer then , you can't detect Dopamine therefore Dopamine is speculation

You can't observe dopamine with a microscope (using a tunneling microscope in very low temperatures it should be definitely possible though, but that's highly impractical), but sure you can detect it.

Same can be said about - say - electrons or magnetic fields, so by your logic they don't exist as well.

Dopamine is a compound with a well known properties, one that we know how to synthesize, how to separate, one that you can buy (as a hydrochloride) salt, one that is used intravenously as a medication in some cases. You really think it is all speculation?

Quote
You can prove me wrong by providing a picture of the ''chemical'' Dopamine of course .

Sure thing, image attached.
28
Undergraduate General Chemistry Forum / Re: CoCl5 3- hybridization and shape
« Last post by Bias Binte Kamal on November 04, 2024, 04:24:42 AM »
Have been looking for it everywhere just can't find anywhere. Anyways, thanks.
29
Undergraduate General Chemistry Forum / Gas Concentration in a container
« Last post by RomanKatz on November 04, 2024, 04:02:47 AM »
Hello Friends,

I have a SO2 container, 49 Kg (100% or else). How can I calculate the remaining weight using the flowmeter on the top?

I think there was an equation or a set of two equations.

Thanks
30
Organic Chemistry Forum / Re: Which base would you use here? No pyridine or DMA - Toxic
« Last post by Meter on November 04, 2024, 01:45:56 AM »
its not soluble in organic solvents?
It can still work on the phase interface. Takes a lot of time, but yes, solubility is a good reason to look in other directions.
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