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#1
11-14-2006, 06:10 AM
 forconversion20 Guest Posts: n/a
mmol/l to mg/l

hello everyone

is there any conversion factor to convert mmol/l to mg/l?
how does one prepare mmol/l of any solution, say lead nitrate??

cheers
p
#2
11-15-2006, 09:32 PM
 Robert Fogt Administrator Join Date: Dec 2005 Location: Seattle, WA Posts: 3,339 Rep Power: 12
Re: mmol/l to mg/l

Here is a chart with various factors:
http://www.vin.com/scripts/labquest/converthtml.pl

There is a technical explantion of the process here:
http://faculty.plattsburgh.edu/rober...ions/index.htm
#3
11-19-2006, 06:07 AM
 Unregistered Guest Posts: n/a
Re: mmol/l to mg/l

thanks a ton
#4
12-23-2006, 08:35 AM
 Unregistered Guest Posts: n/a
Re: mmol/l to mg/l

Quote:
 Originally Posted by forconversion20 hello everyone is there any conversion factor to convert mmol/l to mg/l? how does one prepare mmol/l of any solution, say lead nitrate?? cheers p
To convert mmol/l to mg/l
Multiply mmol/l with 18 you will get mg/l.

Regards
Zubair
#5
04-11-2007, 12:05 PM
 Unregistered Guest Posts: n/a
Re: mmol/l to mg/l

Why 18??? I need to do pretty much teh same conversion going from mol/L to mg/L and i cant for the life of me remember how to do it
#6
04-11-2007, 02:48 PM
 Mrs X can't count, can't spell! Join Date: Feb 2006 Location: New Zealand Posts: 2,294 Rep Power: 11
Re: mmol/l to mg/l

A mole, or mol of something is the weight of a precise number of atoms or molecules, called Avagadro's number. This is the atomic or molecular weight.

1 mol of lead nitrate is the weight in grams of 6.0221415 × 10²³ molecules.

It will be a LOT more than 18.
18g is the weight of 1 mol of water (H2O).

A 1mol/L (1M or 1molar) solution has 6.0221415 x 10²³ molecules per litre, and is in g/L
A 1mmol/L (1millimolar) solution is 1000 times more dilute, and there are 1000mg in 1g.

So to go from mmol/L to mg/L, multiply by the molecular weight.

To go from mg/L to mmol/L divide by the molecular weight.

Lead is poisonous, particularly in solution. If you are really dealing with these solutions, is it possible to get the help of someone who is trained in the use of chemical poisons?
#7
09-26-2011, 05:36 PM
 Unregistered Guest Posts: n/a
Re: mmol/l to mg/l

Quote:
 Originally Posted by Mrs X A mole, or mol of something is the weight of a precise number of atoms or molecules, called Avagadro's number. This is the atomic or molecular weight. 1 mol of lead nitrate is the weight in grams of 6.0221415 × 10²³ molecules. It will be a LOT more than 18. 18g is the weight of 1 mol of water (H2O). A 1mol/L (1M or 1molar) solution has 6.0221415 x 10²³ molecules per litre, and is in g/L A 1mmol/L (1millimolar) solution is 1000 times more dilute, and there are 1000mg in 1g. So to go from mmol/L to mg/L, multiply by the molecular weight. To go from mg/L to mmol/L divide by the molecular weight. Lead is poisonous, particularly in solution. If you are really dealing with these solutions, is it possible to get the help of someone who is trained in the use of chemical poisons?
**Your information helped me alot with conversions! very simple and straight forward! THANK YOU!!**
#8
10-05-2007, 05:31 PM
 Unregistered Guest Posts: n/a
Re: mmol/l to mg/l

Quote:
 Originally Posted by Unregistered Why 18??? I need to do pretty much teh same conversion going from mol/L to mg/L and i cant for the life of me remember how to do it
I need conversion form mmol/L to mg/L and explanation of how to come about that.
#9
10-07-2007, 01:35 PM
 Mrs X can't count, can't spell! Join Date: Feb 2006 Location: New Zealand Posts: 2,294 Rep Power: 11
Re: mmol/l to mg/l

Quote:
 Originally Posted by Unregistered I need conversion form mmol/L to mg/L and explanation of how to come about that.
#10
05-21-2008, 11:52 PM
 dorianjane Guest Posts: n/a
Re: mmol/l to mg/l

Regarding the number '18' in this forum.
It appears in much literature surrounding the conversion of mmol/L - especially for blood glucose.

I found a diabetes article today that uses the number 18 as a conversion tool, on a UK diabetic website. I was trying to find a simple explanation for mmol/L for a student nurse whom I am mentoring just now. As usual I have become totally side tracked.

I would find it interesting to discover where the '18' originates - can investigate 'links' myself, if any available. Thank you.

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