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In Downtown the average concentration of atmospheric nitrogen dioxide (NO2) during March is 10 ppb; what...

In Downtown the average concentration of atmospheric nitrogen dioxide (NO2) during March is 10 ppb; what is the concentration in µg/m3 (assume standard temperature and pressure: 25°C, 1 atm)?

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Answer #1

1 ppb= 1ug/L

Therefore,10 ppb=10 ug/L

But 1 m3=1000 L

Therefore, 1 L=10^-3 m3​​​​​​

Therefore,10 ppb=10 ug/10^-3 m3​​​​​​

Therefore, 10 ppb=10*1000 ug/m3​​​​​​

Therefore, 10 ppb=10,000 ug/ m3​​​​​​

Therefore, the said concentration is 10,000 ug/ m3​​​​​

Thank You!

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