The estimated average concentration of no2 in air in the


The estimated average concentration of NO2 in air in the United States in 2006 was 0.016 ppm.

(a) Calculate the partial pressure of the NO2 in a sample of this air when the atmospheric pressure is 755 torr (99.1 kPa).

(b) How many molecules of NO2 are present under these conditions at 20 °C in a room that measures 15 X 14 X 8 ft?

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Chemistry: The estimated average concentration of no2 in air in the
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