A cylindrical vessel is divided into two parts by a fixed partition which is perfectly heat conducting. The wall and the piston are thermally insulated from the surroundings. The left side contains
0.5 moles of gas with
CV=2R at temperature of
300 K . The right side contains
4 moles of mixture of gas with
CV=1.75R at the same temperature at
300 K. The piston compresses slowly the right side from volume
V0 to
V04. If total change in internal energy of gases is
n×104 J, the value of
n is (
R=25/3 SI units)
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