Physisorbed particles undergo desorption at 27°c with an activation energy of 16.628 kj mol assuming first order process and a frequency factor of 10 hz, the av

Physisorbed particles undergo desorption at 27°C with an activation energy of 16.628 kJ mol Assuming first order process and a frequency factor of 10 Hz, the average residue time (in seconds) of the particles on the surface is: (a) 7.8 x 10 (b) 7.8 x 10 " () 2.9x 10 (d) 1.9x 10