How does the weight of gas compare to air?

The correct answer is that gas is generally lighter than air. Most common gases, such as natural gas, have a lower density than the air surrounding us. This fundamental principle is important, particularly in utilities and maintenance contexts, because it affects how gases behave in different environments—specifically their tendency to rise and disperse in the atmosphere.

Gases like methane, which is a major component of natural gas, are indeed less dense than air. This characteristic is crucial for safety and operational procedures, as it informs how gas leaks are managed and the best practices for ventilation.

The idea that gas could be "2 times heavier" than air is inaccurate, as it contradicts the established principles of gas density and buoyancy. Understanding the relative weight of gases to air is essential for managing utility systems safely and effectively.