1. A compressed cylinder of gas contains of N2 gas at a pressure of Pa and a temperature of 19.4°C. What volume of gas has been released into the atmosphere if the final pressure in the cylinder is Pa? Assume ideal behavior and that the gas temperature is unchanged.
2. A typical diver inhales 0.500 liters of air per breath and carries a 20.-L breathing tank containing air at a pressure of 300. bar. As she dives deeper, the pressure increases by 1 bar for every 10.08 m. How many breaths can the diver take from this tank at a depth of 25 m? Assume that the temperature remains constant.
3. Devise a temperature scale, abbreviated G, for which the magnitude of the ideal gas constant is 3.14 J/G mole
The only thing I can come up with for 1 is use PV = nRT to find V1 and V2 and take the difference. I have no guesses on the other two.