25 litre bottle of oxygen in a hospital. If the bottle is at 12 atmospheres, what volume of oxygen is available to the patient? If the oxygen is stored at 4 degrees C and used at 20 degrees, what difference does this make? (Assuming start volume and pressure are still 25 litres and 12 atmospheres).

Question

25 litre bottle of oxygen in a hospital.  If the bottle is at 12 atmospheres, what volume of oxygen is available to the patient?   If the oxygen is stored at 4 degrees C and used at 20 degrees, what difference does this make? (Assuming start volume and pressure are still 25 litres and 12 atmospheres).

Anonymous · Answer

I wonder what 12 atmospheres means? Is that absolute pressure,or guage pressure? P1V1=P2V2 solve for V2. FOr the second question.. P1V1/T1=P2V2/T2 temps in Kelvins. Solve for V2

Mac · Answer

Thanks. Also noted that V2 would only be 275 as once the pressure in the bottle reaches 1atm, the volume inside would be 25litres. So only 275litres are available.