What is the cylinder constant for an M tank?

The cylinder constant is a specific value that represents the volume of gas that can be extracted from a gas tank under prescribed conditions, and it varies depending on the type of tank. For an M tank, which is commonly used in emergency medical services for storing oxygen, the cylinder constant is typically recognized as 1.56. This value helps paramedics calculate how much oxygen is available based on the pressure remaining in the tank. Understanding this constant is crucial for effective management of oxygen supply during patient care.

In this context, the other options represent values that would not correspond to the established cylinder constant for an M tank, as they pertain to different sizes or types of gas cylinders. The correct understanding of the cylinder constant and its application to M tanks reinforces the importance of having accurate information on gas supplies for patient treatment.