ppbv to ug/m3

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ppbv to ug/m3

Postby ashleym » Mon Jan 23, 2006 2:32 am


im having difficulty understanding the conversion from ppbv to ug/m3.

I know the answer is

(µg/ m3 * 24.45) /molecular weight of compound = ppbv

but when i use the ideal gas law PV=nRT, and i calculate for g/V, i get the units to equal g/L, and then to get ug/m3 i multiply my answer by
1 000 000 000. But the answer i get before i multiply by 1billion is the correct answer. Can someone please tell me why im not supposed to multiply my answer by 1billion?


Re: ppbv to ug/m3

Postby NANARS » Tue Nov 20, 2012 7:52 pm

Hello, this value means the constant of gases, you do not need to transform your units.

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