The four most common gases in the atmosphere are

N_(2),O_(2),Ar

, and

CO_(2)

.\ The gas with the lowest average molecular speed at

25\\\\deg C

is\ The gas with the highest rate of effusion at

25\\\\deg C

is\ The gas with the lowest average kinetic energy at

25\\\\deg C

The four most common gases in the atmosphere are N2,O2,A1, and CO2. The gas with the lowest average molecular speed at 25C is The gas with the highest rate of effusion at 25C is The gas with the lowest average kinetic energy at 25C is The four most common gases in the atmosphere are N2,O2,A1, and CO2. The gas with the lowest average molecular speed at 25C is The gas with the highest rate of effusion at 25C is The gas with the lowest average kinetic energy at 25C is