# how to convert mg m3 into g/s

Hi Everyone, i need some help with a conversion.....

I need to convert 200 mg m-3 of Nitrogen dioxide (NO2) into g/s

The other parameters that i have are....

Discharge rate per stream (flue) 15.4 m3s–1*

Discharge temperature 140 °C

*at reference conditions 273 K, 101.3 kPa, 11% v/v oxygen dry

I would be very greatful for any help anyone could give me!
15:47 Fri 20th Apr 2012
 jomifl Is the density of the NO2 easured at 140 C or is it at NTP. If the former then I imagine you simply multiply the flow rate by the density. If the latter then you will have to allow for the reduced density at the higher temperature. I can't see what relevance the pressure or oxygen values have as we do not know what they apply to. 17:10 Sat 21st Apr 2012 Go To Best Answer

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 Is the density of the NO2 easured at 140 C or is it at NTP. If the former then I imagine you simply multiply the flow rate by the density. If the latter then you will have to allow for the reduced density at the higher temperature. I can't see what relevance the pressure or oxygen values have as we do not know what they apply to. 17:10 Sat 21st Apr 2012 What I don't understand is that 200 mg m-3 is a density, assuming that mg m-3 means milligrams per metre. Whereas if g/s means grams per second, then it doesn't make sense to convert a density into a flowrate. So what is it you need to know exactly? 19:49 Sun 22nd Apr 2012 vascop, I took mg m-3 to mean milligrams per cubic metre. I think there are too many assumptions to be made with this question. I wouldn't be confident in any answer based on the information given 09:38 Mon 23rd Apr 2012 Thanks jomifi, I meant to type cubic metres. I agree it's all very confusing. 15:02 Mon 23rd Apr 2012

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