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32 posts
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Could you please help me figure out how to convert 12.2 mg/l of Na to mmol/l?

Thanks!

Thanks!

- guest

guest wrote:Could you please help me figure out how to convert 12.2 mg/l of Na to mmol/l?

Thanks!

First, a bit of background: The mole is the SI unit for the amount of a substance and one of the seven fundamental SI units. It is defined as the amount of substance of a system that contains as many elementary entities as there are atoms in 0.012 kilograms of carbon-12 (BIPM 1998, p. 97). It is abbreviated "mol," and the number of entities in a mole of substance is given by Avogadro's number, 6.022e+23.

Given that information, a quick trip to a periodic chart http://www.webelements.com/ tells us that Sodiums atomic weight is 22.989770. This means that one mole of sodium (6.022e+23 molecules) weighs 22.989770 grams

With that, we can figure this out:

We've got 12.2 mg of sodium in one liter. converting milligrams to grams, we divide by 1000, so we've got 0.0122 g/l

Next, we'll divide the number of grams of the sodium by the molecular weight, in moles per gram:

- Code: Select all
`0.0122 g/l`

------------- = 5.3068e-4 mol/l

22.989770 mol

-------------

g

To convert 5.3068e-4 mol/l to millimoles (mmol) per liter

5.3068e-4 mol/l * 1000 mmol/mol = 5.3068e-1 mmol/l

- Knight
- Expert
**Posts:**309**Joined:**Tue Jan 13, 2004 9:43 pm**Location:**Los Alamos, NM

hello, i am having trouble with glutathione units, i have my lab report in U/gr Hb and the books report iu/L??? how do i convert it??

- Tania Perez

Anonymous wrote:If you have a mole of An atoms, how many atoms do you have?

*edit* An is supposed to be Zn

- Guest

Anonymous wrote:Anonymous wrote:If you have a mole of An atoms, how many atoms do you have?

*edit* An is supposed to be Zn

That's known as Avogadro's number and it is about 6.02 x 10^23. If you Google, you can find a more accurate number with a few more digits.

- Guest

Could you please help me figure out how to convert 0.1 microgram/ml of Mg to mmol/mol?

- Mahesh.B.S

Anonymous wrote:hey can anyone show me how to conver mol/L to mg/L? thanx

- Guest

Could you please help me figure out how to convert 2.5 mg/ml of 4-nitrophenol (Mw= 139.11) intomicromol/ml ?

- mondher noman
**Posts:**2**Joined:**Mon Dec 11, 2006 3:35 pm**Location:**India

- Guest

I know Millimol would be equal to .001, so I multiply 56 by .001 but how do I include sodium and Oxygen + hydrogen in the equation

- lil Ush

Anonymous wrote:hey can anyone show me how to conver mol/L to mg/L? thanx

convert 20 mmole/l to g/l

- Guest

can someone help me convert 50mg/ml to g/l 20,000ug/ml to g/l, 2340mg/ml to g/l, 500cg/l to g/l, 1.2mg/ml to g/l, 33400mg/l to g/l

please help

please help

- tacopilot

how to convert 10 millimole per litre of Ca,Na,Cl, andSO4 in water sample into milligram per litre and milliequavalent per litre???

- ayat

Guest wrote:If you have a mole of An atoms, how many atoms do you have?

6.022*10^23 ?

- Guest

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- trerealsipmes

Guest wrote:Anonymous wrote:hey can anyone show me how to conver mol/L to mg/L? thanx

- gg

I have an IgE value of 17.7 IU/ml that I need to convert to mg/dl. Can someone tell me how to do that?

- hokieinhooville

32 posts
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