The density of neon at 0°C (273.15 K) and 1 atmosphere (atm) of pressure is 0.89990 grams per liter (g/L).
Neon's density is relatively low because it is a noble gas with a low atomic mass (approximately 20.18 atomic mass units). Density is defined as mass per unit volume. The lighter the atoms or molecules, the lower the density of the gas at a given temperature and pressure.
Here's a breakdown:
- Definition: Density is a measure of how much mass is contained within a given volume.
- Units: Commonly expressed as grams per liter (g/L) or kilograms per cubic meter (kg/m3) for gases.
- Factors Affecting Density: Temperature and pressure significantly influence gas density. As temperature increases, density decreases (at constant pressure). As pressure increases, density increases (at constant temperature).
- Neon's State: Under standard conditions (0°C and 1 atm), neon is a gas. Its density is therefore much lower than that of solids or liquids.
- Context: The given density (0.89990 g/L) is specifically for neon gas at standard temperature and pressure (STP). If temperature or pressure changes, the density will also change according to the ideal gas law (or more complex equations of state for real gases).
