Asample of co2 gas has a mass of 02 kg atomic mass of c , Ask an Expert

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A sample of CO2 gas has a mass of 0.2 kg. (Atomic mass of C = 12; of O = 16). It is originally at T = 450 K and V = 0.1 m3 . It undergoes a free expansion to twice its original volume in a chamber which is thermally isolated from the surroundings.

(a) What is the entropy change of the gas?

(b) What is the net change in entropy of the universe?

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