Originally Posted by
Eclectic
Sarin and VX can both kill by inhalation or absorption through the skin.
Sure, but you need to inhale the net amount you mentioned.
To achive the necessary ppm in a given volume of air you need much much more when you dispense it.
So you can't do the simple Maths you did if you want to know realistically how many people you will kill with a certain arsenal of warheads filled with Sarin.
In the instance where the 500-1000 People in Syria were killed you can assume they (whoever it was) used a collective amount of dozens or rather hundreds of
kg.
According to your calc, 100
mg would have been enough for that.
There is a factor of >10^6 (or 1 Million, to make it more appreciable) between the two.
And that is what I wanted to point out.