A Rigid Tank Is Divided into Two Compartments by a Partition

Multiple Choice

A rigid tank is divided into two compartments by a partition. One compartment contains 2 kmol of N₂ at 500 kPa pressure and the other compartment contains 8 kmol of CO₂ at 200 kPa. Now the partition is removed, and the two gases form a homogeneous mixture at 300 kPa. The partial pressure of N₂ in the mixture is

A) 41 kPa
B) 60 kPa
C) 150 kPa
D) 115 kPa
E) 225 kPa