What is the specific gravity of Nitrogen?

The specific gravity of a substance is a measure of its density relative to the density of water. Specifically, it is defined as the ratio of the density of the substance to the density of water (which is typically 1 g/cm³ at standard temperature and pressure). For gases, this measurement is often based on air, where the specific gravity is calculated against the average molecular weight of air, which is approximately 29 g/mol.

Nitrogen, with a molecular weight of about 28 g/mol, is lighter than air. Its specific gravity is indeed approximately 0.967, meaning it is less dense than the average components of air (which have a higher molecular weight). This value indicates that nitrogen gas will rise in the atmosphere since it is less dense than the air surrounding it.

Understanding the specific gravity of nitrogen helps in various practical applications, such as determining buoyancy conditions in various engineering and environmental contexts. In contrast, other values presented in the options correspond to different gases or conditions that do not represent nitrogen accurately.