The behaviour of gases has been experessed in terms of various gas laws obtained experimentally Boyle s law Charles law Pressure temperature law Dalton s law of partial pressure Graham's law of diffusion and Avogadro's hypothesis Later on Maxwell derived Kinetic equation `PV = (1)/(3) mnu^(2)` theoretically by assuming the concept of molecules and their motion The term u reprsents root mean square speed of molecule
The average kinetic energy of `1.6g CH_(4)` molecules at `27^(@)C` is .

Options

A. `6.21 XX 10^(-15) erg`
B. `6.21 XX 10^(-15)` joule
C. `6.21 XX 10^(-15)` calorie
D. None of these

Explanation

Average `K.E =(3 xx n xx R xxT)/(2 xx Av. No)`
`= (3xx0.1 xx 8.314 xx 10^(7) xx 300)/(2 xx 6.023 xx 10^(23))`
`= 6.21 xx 10^(-15) erg` .