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A cubic meter of air was sampled at 1.0 ATM and 40 C.
An ion chromatographic analysis of that sample found it to contain 12 micrograms of NO2.
How many ppb of NO2 is in the air?

A cubic meter of air was sampled at 10 ATM and 40 C An ion chromatographic analysis of that sample found it to contain 12 micrograms of NO2 How many ppb of NO2 class=

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The amount of nitrogen oxide in the air sample is determined as 7.01 ppb.

Amount of Nitrogen oxide in the air

The amount of Nitrogen oxide (NO2) in the air in parts per billion (ppb) is calculated as follows;

12 micrograms of NO2 = 12 μg = 12 x 10⁻⁶ g

PV = nRT

V = nRT/P

Where;

  • V is volume of NO2 gas
  • n is number of moles of NO2 gas
  • T is temperature = 40 C = 313 K

n = m/M

M = molar mass of NO2 = 46

n =  12 x 10⁻⁶/46

n = 2.73 x 10⁻⁷ mole

V = (2.73 x 10⁻⁷ x 0.082057 x 313)/(1)

V = 7.01 x 10⁻⁶ L

V =  7.01 x 10⁻⁹ m³

Amount of NO2 In parts per billion

= (Volume of NO2)/(volume of air) x 10⁹

= (7.01 x 10⁻⁹)/(1) x  10⁹

= 7.01 ppb

Thus, the amount of nitrogen oxide in the air sample is determined as 7.01 ppb.

Learn more about nitrogen oxide here: https://brainly.com/question/13629381

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