Final answer:
The pressure of gas in a full cylinder of oxygen for medical or industrial use is typically around 2,000 psi. Safe handling and proper regulation are crucial due to the high-pressure conditions.
Step-by-step explanation:
The pressure of gas in a full cylinder of oxygen can vary depending on the cylinder size and use, but typically for medical or industrial use, the pressure is around 2,000 psi. High-pressure cylinders are filled to a pressure that can range between 1,800 to 2,200 psi, but for safety reasons and to allow for thermal expansion, they are often filled to 2,000 psi at 70°F (21°C). When dealing with high-pressure cylinders, it's vital to handle them with care and use proper regulators to prevent accidents, and to always adhere to the safety practices recommended for compressed gases.