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a. Concentration of NO2 of 1.2 µg/L. Pressure =0.98 atm, Temp = 20 C Problem 2. For the following cases, convert the ug/L concentration to ppm concentrations for air b.

Concentration of Hg of 0.05 µg/L. Pressure = 0.80 atm, Temp = -30 C c. Concentration of CH4 of 0.25 µg/L. Pressure = 1 atm, Temp = 0 C

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