Consider a rubber plate that is in contact with nitrogen

Question

1. A wall made of natural rubber separates O₂ and N₂ gases at 25°C and 500 kPa. Determine the molar concentrations of O₂ and N₂ in the wall.

2. Consider a rubber plate that is in contact with nitrogen gas at 298 K and 250 kPa. Determine the molar and mass density of nitrogen in the rubber at the interface.