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How can you determine the amount of oxygen in a portable, high pressure cylinder?
Weigh the cylinder
Perform a chemical test
Read the pressure gauge mounted on the cylinder
Measure the cylinder's temperature
The correct answer is: Read the pressure gauge mounted on the cylinder
To determine the amount of oxygen in a portable, high-pressure cylinder, you would read the pressure gauge mounted on the cylinder. The pressure gauge provides a direct indication of the pressure of the gas inside the cylinder, which can be correlated to the amount of gas remaining. By monitoring the pressure gauge, you can assess the quantity of oxygen remaining in the cylinder and determine if it meets the operational requirements for its intended use. Weighing the cylinder would not provide information about the amount of oxygen inside. Performing a chemical test is not a typical method for determining the quantity of oxygen in a cylinder. Measuring the cylinder's temperature is also unrelated to assessing the amount of oxygen present. Therefore, the correct method to determine the amount of oxygen in a portable, high-pressure cylinder is to read the pressure gauge mounted on the cylinder.