What is the approximate specific gravity of natural gas?

Natural gas typically has a specific gravity that ranges from approximately 0.6 to 0.8, depending on its composition, with methane being the primary component. Specific gravity is a measure used to compare the density of a gas to the density of air, and natural gas being lighter than air is indicated by a specific gravity of less than 1. The correct answer of 0.65 falls within the common range for natural gas, reflecting its lighter-than-air characteristics. This property is significant in various applications, such as in safety measures and the design of systems that utilize natural gas, as it influences how the gas behaves in the environment, including its dispersion in case of a leak.