(20pts) At
T=25\deg C,1000cm^(3)
of nitrogen
(N_(2))
at pressure
P_(1)=1
atm is mixed with
2000cm^(3)
of oxygen
(O_(2))
at pressure
P_(2)=2atm
. The volume of the mixture is then changed such that the temperature and pressure in the final state are
T=25\deg C
and
P=1atm
, respectively. Please calculate the change of entropy associated with this two-step process if both nitrogen and oxygen behavior as ideal gas. (the gas constant
R=0.082
liter
*at(m)/()
degree
*
mole
=8.314
joule
/
degree
*
mole