In the air we breathe and in the compressed air in divers' tanks, there is, in addition to oxygen, nitrogen gas (N2). This gas enters and leaves the lungs without consequences for the body, but more than 30 m deep in the water, this gas dissolves in the bloodstream. When divers rise to the surface abruptly, the pressure decreases, which causes the solubility of dissolved nitrogen to be reduced and consequently this gas to leave the blood in a violent way. This process can cause health problems or even the death of the diver, so it is recommended that they climb slowly and taking breaks.
a) Is solubility an intensive or extensive property?