A fresh E-cylinder of oxygen contains approximately how many liters of oxygen at sea level?

A fresh E-cylinder of oxygen typically contains approximately 660 liters of oxygen at sea level. This amount is a standard measurement commonly referenced in medical and clinical settings. The E-cylinder is a small, portable tank used for transporting and supplying oxygen, particularly for patients needing supplemental oxygen.

The figure of 660 liters aligns with the capacity of an E-cylinder, which holds a high-pressure gas (oxygen) that expands to fill the cylinder's volume. The pressure within the cylinder is usually around 2000 psi when full, and as the oxygen is released and used, the pressure decreases, which corresponds to the volume of gas available for use.

This understanding is essential for healthcare providers and anyone utilizing oxygen therapy, as it helps ensure that patients receive adequate oxygen while also allowing for management of the oxygen supply during treatment. The other options do not reflect the standardized capacity of an E-cylinder, either overestimating or underestimating the actual volume it can hold.