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EMERGENCY RESPONSE  WITHIN 48 HRS

Molecular MeanFree Path Length Versus Pressure

Pressure (Torr)Molecular Data
 MeanFree Path LengthORMolecules per cm3Number of MoleculesAverage Rate of Intermolecular CollisionOR
Atmosphere1.0 x 10-5 cm2.5 x 10+193.0 x 10+235.0 x 10+09/sec
1.0 x 10-37.0 x 1000 cm3.3 x 10+133.5 x 10+176.5 x 10+03/sec
1.0 x 10-87.0 x 1000 km4.38 miles3.3 x 10+083.5 x 10+126.5 x 10-02/sec1 per 15 sec
1.0 x 10-107.0 x 10+02 km438 miles3.3 x 10+063.5 x 10+106.5 x 10-04/sec1 per 25 sec
1.0 x 10-127.0 x 10+04 km438,000 miles3.3 x 10+043.3 x 10+086.5 x 10-06/sec1 per 45 hrs
1.0 x 10-147.0 x 10+06 km4.38 x 10+06 miles3.3 x 10+023.3 x 10+066.5 x 10-08/sec1 per 88 days
1.0 x 10-167.0 x 10+08 km4.38 x 10+08 miles3.3 x 10+003.3 x 10+046.5 x 10-10/sec1 per 51.5 yrs