# 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