During expansion of a gas into vaccum (P_(ext)=0) workdone is zero if the process s

Expansion of a perfect gas into vaccum is related with

The work done during expansion of a gas in vacuum is zero, because there is

During isothermal expansion of an ideal gas its

Staement -1: The heat absorbed during the isothermal expansion of an ideal gas againt vacuum is zero . Statement -2: The volume occupied by the molecules of an ideal gas is zero.