Oxygen is stored in a cylinder at what psi when full?

The correct answer reflects that oxygen is stored in a cylinder at approximately 2000-2100 psi when full. Medical oxygen cylinders are typically filled to this pressure to ensure a sufficient supply of oxygen for various applications, including medical use and industrial purposes. The high pressure allows for a substantial volume of oxygen to be contained within a relatively compact cylinder, making it practical for transport and usage in emergency situations, surgeries, or respiratory therapy.

It's important to note that different gases have distinct pressure requirements, which is why understanding the storage pressure for oxygen is critical for safety and proper handling in medical settings. Other pressures listed in the options are representative of different types of gas cylinders or are simply too high for standard oxygen cylinders. This knowledge is crucial for ensuring that healthcare professionals use the appropriate equipment and follow safety protocols when working with oxygen supplies.