How to convert density from mol/L to kg/m3?

1. Feb 27, 2008

Stupid_Engine

How to convert density from mol/L to kg/m3?

2. Feb 27, 2008

FredGarvin

Let the units be your guide...You need to convert the moles to gram by using the molecular weight of whatever you are looking at. The conversion to m^3 from L is 1000, i.e. there are 1000 L in one m^3. So your conversion should look like

$$\left[\frac{mol}{L}\right] \left[\frac{MW}{mol}\right]\left[\frac{kg}{1000 g}\right] \left[\frac{1000 L}{m^3}\right]$$

Last edited: Feb 27, 2008
3. Mar 1, 2008

jaap de vries

Main point is that there is no magic conversion factor like 2.54 or something like that.
example
MW of Air is about 28.84 g/mole
The density of air is 1.2 kg/m^3
so that is 1200 grams/m^3
so that is 1200/28.84 moles /m^3
so that is 1.2/28.84 moles/L