how deep you are in the water.
The highest pressure in any open vessel is at the deepest point.
It best to but depends on the amount of swimming being done. About 30 minutes should be good.
The gas pressure depends on the amount (number of moles), volume and temperature. It is independent from the kind of gas.
Less pressure because ocean water is salty and therefore denser.
pressure and density. dont quote me.
Because it's what we are adapted and used to.
This depends on the amount of force you need. From one atmosphere to 500 atmospheres.
It depends on the pressure you wish to achieve.
This amount is called solubility at a given temperature and pressure.
Gas pressure depends on volume, temperature, AND the amount of gas. You didn't give an amount of gas, so there is no way to answer your question.
The amount of combat experience you get depends on the amount of damage you cause. Every time you hit another player or an NPC, you get experience according to this damage - not just when you kill him.
depends on the amount of experience but can start at TTD 8500 per month without any experience.