Measurements taken during the following reaction showed a concentration of carbon monoxide (CO) of  196.9 mol/L at 13.9 min and of 122.7 mol/L at 29.5 min. CO (g) + NO2 (g) --> CO2 (g) + NO (g) Calculate the average rate of the gain of carbon dioxide (CO2) in M/sec. Write the answer in scientific notation with 3 sig.dig.

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