Which of the following is the typical pressure inside a compressed gas cylinder used in laboratories?

• A. 760 mmHg
• B. 150 atm
• C. 10 atm
• D. 1 atm

Answer: (B)

Verified step by step guidance

1. Understand that the question asks for the typical pressure inside a compressed gas cylinder used in laboratories, which usually contains gases stored at high pressures to maximize the amount of gas in a small volume.
2. Recall that atmospheric pressure at sea level is 1 atm, which is equivalent to 760 mmHg. This is the pressure of the surrounding environment, not the pressure inside a compressed gas cylinder.
3. Recognize that compressed gas cylinders are designed to hold gases at pressures much higher than atmospheric pressure to store a significant amount of gas safely.
4. Typical laboratory compressed gas cylinders often have pressures on the order of hundreds of atmospheres, commonly around 150 atm, to ensure sufficient gas quantity and safe handling.
5. Therefore, compare the given options and identify that 150 atm is the typical pressure inside a compressed gas cylinder, as it is significantly higher than atmospheric pressure and consistent with standard laboratory practice.