# Really fast problem

1. Feb 24, 2005

### fcukniles

i know this probably sounds really stupid but how do i convert 20mm of gas into pascals?
thnx

2. Feb 24, 2005

### faust9

Pa has units of $N/m^2$ thus you need a little more info to convert 20mm of gas to pascals.

3. Feb 24, 2005

### Gamma

$p = h \rho g$, when you use SI units in the RHS, P is in N/m^2. You need to know the density of the gas. g is the accelaration of gravity.