The concentration of NO2 at 25oC and 2 atm pressure in the closed empty container was measured as 60 µg/m3. Under the same condition, the above NO2 concentration expressed in ppm is ____
1
0.032
2
0.029
3
0.016
4
0.022
The concentration of NO2 at 25oC and 2 atm pressure in the closed empty container was measured as 60 µg/m3. Under the same condition, the above NO2 concentration expressed in ppm is ____