Question

Heliox is a helium-oxygen mixture that may be used in scuba tanks for divers working at great depths. It is also used medically as a breathing treatment. A 7.25 L tank holds helium gas at a pressure of 2206 psi. A second 7.25 L tank holds oxygen at a pressure of 586.5 psi. The two gases are mixed in a 7.25 L tank. If the temperature remains the same throughout the process, what is the pressure of the gas mixture in the tank? Assume ideal gas behavior. 189.88

Answer 1

These problems we can be solve by use dalton's law of partial pressure According to this law, if Total pressure is equal to the Sum of the pressures of the Individual gases. W t Gas AtBtc hag-c бод 3 P3 Total pressure PAPLAP3 A gas pressure Pi Same Volume v Igas Cylinders ✓ V 1 In this problem as also two Cylinder are Same Volume. Sebden at Constant to So we can use DALTON's law of partial pressure Heluim gas presure Pe 2206 psi Oxygen gas presure Pe 586:6 psi Total gas are mixed gas procesure p= Pith - 2006 +586.6 psi 22792,6 psi 191 906 m R-230 atm Vie Faam! Tolal volume 700- Just gmagino gas expand to Volume 2e WinL Now pressure - PM eRve a Pro Ping 1084 am) - V Similay manner Caleutate other gas Presare it it expanded to 906 Piz 4.80 atm = 400 1994 12 906 P2 = 0.94 ton Now total presen PitP2 = 184 +0.99 shy 2078 aby]