41. The activity of a species in an ideal gas phase may be replaced by its partial pressure . 42. The partial pressure of oxygen in the air in the lungs controls the oxygen loading of blood. 43. Divers also use a similar device to measure the partial pressure of oxygen in their breathing gas. 44. The model was originally developed for programming decompression computers for constant oxygen partial pressure closed circuit rebreathers. 45. The minimum safe lower limit for the partial pressures of oxygen in a gas mixture is absolute. 46. Organisms living at high elevations experience lower partial pressures of oxygen compared to those at sea level. 47. Where p represents the partial pressure . 48. The amount of water vapor in an atmosphere is constrained by the restrictions of partial pressures and temperature. 49. The onset of seizure depends upon the partial pressure of oxygen in the breathing gas and exposure duration. 50. Partial pressure of oxygen must be correct as a fraction of absolute pressure at the point of measurement.
