A vessel is divided into two parts by a partition, and contains 2 mol of nitrogen gas at 80 C and 40 bar on one side and 3 mol of argon gas at 150 C and 15 bar on the other. Id the partition is removed and the gases mix adiabatically and completely, what is the change in entropy
Assume nitrogen an ideal gas with Cv=(5/2)R and argon an ideal gas with Cv=(3/2)R